Finding the Fourth Proportional to 1,123.56, 1,550.49 and 626.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.56 : 1,550.49 = 626.25 : x
2. Step 2: Convert to fraction form
   1,123.56/1,550.49 = 626.25/x
3. Step 3: Cross multiply
   1,123.56x = 1,550.49 × 626.25
4. Step 4: Simplify right side
   1,123.56x = 970,994.36
5. Step 5: Solve for x
   x = 970,994.36/1,123.56
6. Step 6: Final answer
   x = 864.21