Finding the Fourth Proportional to 2,234.10, 3,082.98 and 1,239.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,234.10 : 3,082.98 = 1,239.31 : x
2. Step 2: Convert to fraction form
   2,234.10/3,082.98 = 1,239.31/x
3. Step 3: Cross multiply
   2,234.10x = 3,082.98 × 1,239.31
4. Step 4: Simplify right side
   2,234.10x = 3,820,767.94
5. Step 5: Solve for x
   x = 3,820,767.94/2,234.10
6. Step 6: Final answer
   x = 1,710.20