Finding the Fourth Proportional to 2,233.91, 3,082.81 and 1,239.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.91 : 3,082.81 = 1,239.25 : x
2. Step 2: Convert to fraction form
   2,233.91/3,082.81 = 1,239.25/x
3. Step 3: Cross multiply
   2,233.91x = 3,082.81 × 1,239.25
4. Step 4: Simplify right side
   2,233.91x = 3,820,361.49
5. Step 5: Solve for x
   x = 3,820,361.49/2,233.91
6. Step 6: Final answer
   x = 1,710.17