Finding the Fourth Proportional to 1,123.49, 1,550.43 and 626.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.49 : 1,550.43 = 626.13 : x
2. Step 2: Convert to fraction form
   1,123.49/1,550.43 = 626.13/x
3. Step 3: Cross multiply
   1,123.49x = 1,550.43 × 626.13
4. Step 4: Simplify right side
   1,123.49x = 970,770.74
5. Step 5: Solve for x
   x = 970,770.74/1,123.49
6. Step 6: Final answer
   x = 864.07