Finding the Fourth Proportional to 3,390.88, 5,086.41 and 1,082.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390.88 : 5,086.41 = 1,082.38 : x
2. Step 2: Convert to fraction form
   3,390.88/5,086.41 = 1,082.38/x
3. Step 3: Cross multiply
   3,390.88x = 5,086.41 × 1,082.38
4. Step 4: Simplify right side
   3,390.88x = 5,505,397.61
5. Step 5: Solve for x
   x = 5,505,397.61/3,390.88
6. Step 6: Final answer
   x = 1,623.59