Finding the Fourth Proportional to 2,057.40, 3,083.81 and 1,647.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.40 : 3,083.81 = 1,647.27 : x
2. Step 2: Convert to fraction form
   2,057.40/3,083.81 = 1,647.27/x
3. Step 3: Cross multiply
   2,057.40x = 3,083.81 × 1,647.27
4. Step 4: Simplify right side
   2,057.40x = 5,079,859.46
5. Step 5: Solve for x
   x = 5,079,859.46/2,057.40
6. Step 6: Final answer
   x = 2,469.07