Finding the Fourth Proportional to 3,903.80, 5,847.49 and 2,665.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,903.80 : 5,847.49 = 2,665.41 : x
2. Step 2: Convert to fraction form
   3,903.80/5,847.49 = 2,665.41/x
3. Step 3: Cross multiply
   3,903.80x = 5,847.49 × 2,665.41
4. Step 4: Simplify right side
   3,903.80x = 15,585,939.72
5. Step 5: Solve for x
   x = 15,585,939.72/3,903.80
6. Step 6: Final answer
   x = 3,992.51