Finding the Fourth Proportional to 1,272.28, 1,755.84 and 748.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272.28 : 1,755.84 = 748.72 : x
2. Step 2: Convert to fraction form
   1,272.28/1,755.84 = 748.72/x
3. Step 3: Cross multiply
   1,272.28x = 1,755.84 × 748.72
4. Step 4: Simplify right side
   1,272.28x = 1,314,632.52
5. Step 5: Solve for x
   x = 1,314,632.52/1,272.28
6. Step 6: Final answer
   x = 1,033.29