Finding the Fourth Proportional to 1,131.98, 1,561.28 and 759.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.98 : 1,561.28 = 759.38 : x
2. Step 2: Convert to fraction form
   1,131.98/1,561.28 = 759.38/x
3. Step 3: Cross multiply
   1,131.98x = 1,561.28 × 759.38
4. Step 4: Simplify right side
   1,131.98x = 1,185,604.81
5. Step 5: Solve for x
   x = 1,185,604.81/1,131.98
6. Step 6: Final answer
   x = 1,047.37