Finding the Fourth Proportional to 1,131.12, 1,561.71 and 732.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.12 : 1,561.71 = 732.90 : x
2. Step 2: Convert to fraction form
   1,131.12/1,561.71 = 732.90/x
3. Step 3: Cross multiply
   1,131.12x = 1,561.71 × 732.90
4. Step 4: Simplify right side
   1,131.12x = 1,144,577.26
5. Step 5: Solve for x
   x = 1,144,577.26/1,131.12
6. Step 6: Final answer
   x = 1,011.90