Finding the Fourth Proportional to 1,134.42, 1,565.40 and 714.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,134.42 : 1,565.40 = 714.78 : x
2. Step 2: Convert to fraction form
   1,134.42/1,565.40 = 714.78/x
3. Step 3: Cross multiply
   1,134.42x = 1,565.40 × 714.78
4. Step 4: Simplify right side
   1,134.42x = 1,118,916.61
5. Step 5: Solve for x
   x = 1,118,916.61/1,134.42
6. Step 6: Final answer
   x = 986.33