Finding the Fourth Proportional to 1,272.57, 1,755.52 and 801.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272.57 : 1,755.52 = 801.04 : x
2. Step 2: Convert to fraction form
   1,272.57/1,755.52 = 801.04/x
3. Step 3: Cross multiply
   1,272.57x = 1,755.52 × 801.04
4. Step 4: Simplify right side
   1,272.57x = 1,406,241.74
5. Step 5: Solve for x
   x = 1,406,241.74/1,272.57
6. Step 6: Final answer
   x = 1,105.04