Finding the Fourth Proportional to 1,168.28, 1,612.38 and 702.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.28 : 1,612.38 = 702.56 : x
2. Step 2: Convert to fraction form
   1,168.28/1,612.38 = 702.56/x
3. Step 3: Cross multiply
   1,168.28x = 1,612.38 × 702.56
4. Step 4: Simplify right side
   1,168.28x = 1,132,793.69
5. Step 5: Solve for x
   x = 1,132,793.69/1,168.28
6. Step 6: Final answer
   x = 969.63