Finding the Fourth Proportional to 1,123.29, 1,550.18 and 625.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.29 : 1,550.18 = 625.92 : x
2. Step 2: Convert to fraction form
   1,123.29/1,550.18 = 625.92/x
3. Step 3: Cross multiply
   1,123.29x = 1,550.18 × 625.92
4. Step 4: Simplify right side
   1,123.29x = 970,288.67
5. Step 5: Solve for x
   x = 970,288.67/1,123.29
6. Step 6: Final answer
   x = 863.79