Finding the Fourth Proportional to 1,131.86, 1,561.08 and 758.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.86 : 1,561.08 = 758.72 : x
2. Step 2: Convert to fraction form
   1,131.86/1,561.08 = 758.72/x
3. Step 3: Cross multiply
   1,131.86x = 1,561.08 × 758.72
4. Step 4: Simplify right side
   1,131.86x = 1,184,422.62
5. Step 5: Solve for x
   x = 1,184,422.62/1,131.86
6. Step 6: Final answer
   x = 1,046.44