Finding the Fourth Proportional to 1,123.88, 1,551.69 and 731.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.88 : 1,551.69 = 731.57 : x
2. Step 2: Convert to fraction form
   1,123.88/1,551.69 = 731.57/x
3. Step 3: Cross multiply
   1,123.88x = 1,551.69 × 731.57
4. Step 4: Simplify right side
   1,123.88x = 1,135,162.09
5. Step 5: Solve for x
   x = 1,135,162.09/1,123.88
6. Step 6: Final answer
   x = 1,010.04