Finding the Fourth Proportional to 760.10, 1,131.71 and 756.45

Step by Step Solution

1. Step 1: Write the proportion equation
   760.10 : 1,131.71 = 756.45 : x
2. Step 2: Convert to fraction form
   760.10/1,131.71 = 756.45/x
3. Step 3: Cross multiply
   760.10x = 1,131.71 × 756.45
4. Step 4: Simplify right side
   760.10x = 856,078.25
5. Step 5: Solve for x
   x = 856,078.25/760.10
6. Step 6: Final answer
   x = 1,126.28