Question: How to solve for distance in a CurveFitting?

Hello all

I need to calculate the distance L in a curvefitting. The calculation has been made in MathCAD and I need to copy it in Maple, but I cant seem to make it solve.

Here are the two pictures of my problem:

In MathCAD:

In Maple:

Here is the copy of Maple:

V[Ed13] := [257.184, 230.4, 184.3, 138.2, 92.2, 46.1, 0];
 = 
    V[Ed13] := [257.184, 230.4, 184.3, 138.2, 92.2, 46.1, 0]

x[12];
 = 
            [-149, 208, 567, 925, 1283, 1642, 2000]

L[1] := x[13];
 = 
         L[1] := [0, 358, 717, 1075, 1433, 1792, 2150]

solve(V[Rdc] = CurveFitting:-ArrayInterpolation(x[12], V[Ed13], L[1]), L[1]);
 = 
Error, invalid input: solve expects its 1st argument, eqs, to be of type {`and`, `not`, `or`, algebraic, relation(algebraic), ({list, set})({`and`, `not`, `or`, algebraic, relation(algebraic)})}, but received 153.25 = [HFloat(246.00524369747902), HFloat(211.1381615598886), HFloat(164.98435754189944), HFloat(118.92625698324022), HFloat(72.93816155988858), HFloat(26.784357541899443), HFloat(-19.315642458100548)]

Find 
L[1];

Answer should be 808
 

Hope someone can help as I honestly have no idea how to do this :-)