Solve for x:
(385)^2 - x^2 = (760.35)^2 - (637.4 - x)^2
just plug and chug:
148225 - x^2 = 578132.1225 - 406278.76 + 1274.8x - x^2
x = -18.535
(385)^2 - x^2 = (760.35)^2 - (637.4 - x)^2
148225 - x^2 = 578132.1225 - 406278.76 + 1274.8x - x^2
x = -18.535