Finding the Fourth Proportional to 2,233.72, 3,082.46 and 1,239

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.72 : 3,082.46 = 1,239 : x
2. Step 2: Convert to fraction form
   2,233.72/3,082.46 = 1,239/x
3. Step 3: Cross multiply
   2,233.72x = 3,082.46 × 1,239
4. Step 4: Simplify right side
   2,233.72x = 3,819,167.94
5. Step 5: Solve for x
   x = 3,819,167.94/2,233.72
6. Step 6: Final answer
   x = 1,709.78