Finding the Fourth Proportional to 1,272.03, 1,755.31 and 740.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272.03 : 1,755.31 = 740.89 : x
2. Step 2: Convert to fraction form
   1,272.03/1,755.31 = 740.89/x
3. Step 3: Cross multiply
   1,272.03x = 1,755.31 × 740.89
4. Step 4: Simplify right side
   1,272.03x = 1,300,491.63
5. Step 5: Solve for x
   x = 1,300,491.63/1,272.03
6. Step 6: Final answer
   x = 1,022.37