Finding the Fourth Proportional to 1,375.32, 2,061.24 and 757.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.32 : 2,061.24 = 757.68 : x
2. Step 2: Convert to fraction form
   1,375.32/2,061.24 = 757.68/x
3. Step 3: Cross multiply
   1,375.32x = 2,061.24 × 757.68
4. Step 4: Simplify right side
   1,375.32x = 1,561,760.32
5. Step 5: Solve for x
   x = 1,561,760.32/1,375.32
6. Step 6: Final answer
   x = 1,135.56