Finding the Fourth Proportional to 1,082.43, 1,493.71 and 662.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.43 : 1,493.71 = 662.80 : x
2. Step 2: Convert to fraction form
   1,082.43/1,493.71 = 662.80/x
3. Step 3: Cross multiply
   1,082.43x = 1,493.71 × 662.80
4. Step 4: Simplify right side
   1,082.43x = 990,025.60
5. Step 5: Solve for x
   x = 990,025.60/1,082.43
6. Step 6: Final answer
   x = 914.63