Finding the Fourth Proportional to 2,233.80, 3,082.67 and 1,239.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.80 : 3,082.67 = 1,239.09 : x
2. Step 2: Convert to fraction form
   2,233.80/3,082.67 = 1,239.09/x
3. Step 3: Cross multiply
   2,233.80x = 3,082.67 × 1,239.09
4. Step 4: Simplify right side
   2,233.80x = 3,819,705.57
5. Step 5: Solve for x
   x = 3,819,705.57/2,233.80
6. Step 6: Final answer
   x = 1,709.96