Finding the Fourth Proportional to 1,080.59, 1,620.14 and 714.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.59 : 1,620.14 = 714.27 : x
2. Step 2: Convert to fraction form
   1,080.59/1,620.14 = 714.27/x
3. Step 3: Cross multiply
   1,080.59x = 1,620.14 × 714.27
4. Step 4: Simplify right side
   1,080.59x = 1,157,213.83
5. Step 5: Solve for x
   x = 1,157,213.83/1,080.59
6. Step 6: Final answer
   x = 1,070.91