Finding the Fourth Proportional to 1,123.37, 1,550.16 and 626.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.37 : 1,550.16 = 626.03 : x
2. Step 2: Convert to fraction form
   1,123.37/1,550.16 = 626.03/x
3. Step 3: Cross multiply
   1,123.37x = 1,550.16 × 626.03
4. Step 4: Simplify right side
   1,123.37x = 970,438.91
5. Step 5: Solve for x
   x = 970,438.91/1,123.37
6. Step 6: Final answer
   x = 863.87