Finding the Fourth Proportional to 1,068.88, 1,475.10 and 714.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.88 : 1,475.10 = 714.20 : x
2. Step 2: Convert to fraction form
   1,068.88/1,475.10 = 714.20/x
3. Step 3: Cross multiply
   1,068.88x = 1,475.10 × 714.20
4. Step 4: Simplify right side
   1,068.88x = 1,053,516.42
5. Step 5: Solve for x
   x = 1,053,516.42/1,068.88
6. Step 6: Final answer
   x = 985.63