Finding the Fourth Proportional to 1,123.44, 1,550.28 and 626.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.44 : 1,550.28 = 626.10 : x
2. Step 2: Convert to fraction form
   1,123.44/1,550.28 = 626.10/x
3. Step 3: Cross multiply
   1,123.44x = 1,550.28 × 626.10
4. Step 4: Simplify right side
   1,123.44x = 970,630.31
5. Step 5: Solve for x
   x = 970,630.31/1,123.44
6. Step 6: Final answer
   x = 863.98