For mgh + 1/2mv2 = 1/2kx2
4,29*9,81*2,53 + 1/2*4,29*4,212 = 1/2*1770*x2
144,4929915 = 885*x2
x2 = 144,4929915/885
x2 = 0,1632689169491525423728813559322
x = 0,40406548596626332293541051481052 m
System doesn't accept this answer.
For mg(h+x) + 1/2mv2 = 1/2kx2
4,29*9,81*(2,53+x) + 1/2*4,29*4,212...