Finding the Fourth Proportional to 1,082.10, 1,493.73 and 689.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.10 : 1,493.73 = 689.61 : x
2. Step 2: Convert to fraction form
   1,082.10/1,493.73 = 689.61/x
3. Step 3: Cross multiply
   1,082.10x = 1,493.73 × 689.61
4. Step 4: Simplify right side
   1,082.10x = 1,030,091.15
5. Step 5: Solve for x
   x = 1,030,091.15/1,082.10
6. Step 6: Final answer
   x = 951.94