Finding the Fourth Proportional to 1,082.43, 1,494.25 and 689.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.43 : 1,494.25 = 689.99 : x
2. Step 2: Convert to fraction form
   1,082.43/1,494.25 = 689.99/x
3. Step 3: Cross multiply
   1,082.43x = 1,494.25 × 689.99
4. Step 4: Simplify right side
   1,082.43x = 1,031,017.56
5. Step 5: Solve for x
   x = 1,031,017.56/1,082.43
6. Step 6: Final answer
   x = 952.50