Finding the Fourth Proportional to 1,058.91, 1,462.25 and 686.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.91 : 1,462.25 = 686.51 : x
2. Step 2: Convert to fraction form
   1,058.91/1,462.25 = 686.51/x
3. Step 3: Cross multiply
   1,058.91x = 1,462.25 × 686.51
4. Step 4: Simplify right side
   1,058.91x = 1,003,845.59
5. Step 5: Solve for x
   x = 1,003,845.59/1,058.91
6. Step 6: Final answer
   x = 948.00