Finding the Fourth Proportional to 1,123.82, 1,550.88 and 626.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.82 : 1,550.88 = 626.45 : x
2. Step 2: Convert to fraction form
   1,123.82/1,550.88 = 626.45/x
3. Step 3: Cross multiply
   1,123.82x = 1,550.88 × 626.45
4. Step 4: Simplify right side
   1,123.82x = 971,551.70
5. Step 5: Solve for x
   x = 971,551.70/1,123.82
6. Step 6: Final answer
   x = 864.50