Finding the Fourth Proportional to 1,275.52, 1,760.28 and 716.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,275.52 : 1,760.28 = 716.04 : x
2. Step 2: Convert to fraction form
   1,275.52/1,760.28 = 716.04/x
3. Step 3: Cross multiply
   1,275.52x = 1,760.28 × 716.04
4. Step 4: Simplify right side
   1,275.52x = 1,260,430.89
5. Step 5: Solve for x
   x = 1,260,430.89/1,275.52
6. Step 6: Final answer
   x = 988.17