1 4 7 x 287 find x July 8, 2019 16 32 64 128 1 4 7 10 x 287 find x 1 4 7 10 x 287 find the value of x If 1 4 7 10 x 287 find x Solve the equation 1 4 7 10 x 287 find x 1 4 x 7 1 + 4 + 7 + ... + x = 925 (7 2)/(1 44) = x/2.88