Finding the Fourth Proportional to 1,123.53, 1,550.52 and 626.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.53 : 1,550.52 = 626.17 : x
2. Step 2: Convert to fraction form
   1,123.53/1,550.52 = 626.17/x
3. Step 3: Cross multiply
   1,123.53x = 1,550.52 × 626.17
4. Step 4: Simplify right side
   1,123.53x = 970,896.63
5. Step 5: Solve for x
   x = 970,896.63/1,123.53
6. Step 6: Final answer
   x = 864.15