Finding the Fourth Proportional to 1,272.82, 1,756.72 and 748.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272.82 : 1,756.72 = 748.88 : x
2. Step 2: Convert to fraction form
   1,272.82/1,756.72 = 748.88/x
3. Step 3: Cross multiply
   1,272.82x = 1,756.72 × 748.88
4. Step 4: Simplify right side
   1,272.82x = 1,315,572.47
5. Step 5: Solve for x
   x = 1,315,572.47/1,272.82
6. Step 6: Final answer
   x = 1,033.59