Finding the Fourth Proportional to 2,233.47, 3,082.17 and 1,238.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.47 : 3,082.17 = 1,238.79 : x
2. Step 2: Convert to fraction form
   2,233.47/3,082.17 = 1,238.79/x
3. Step 3: Cross multiply
   2,233.47x = 3,082.17 × 1,238.79
4. Step 4: Simplify right side
   2,233.47x = 3,818,161.37
5. Step 5: Solve for x
   x = 3,818,161.37/2,233.47
6. Step 6: Final answer
   x = 1,709.52