Finding the Fourth Proportional to 3,840.32, 5,755.81 and 2,081.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,840.32 : 5,755.81 = 2,081.15 : x
2. Step 2: Convert to fraction form
   3,840.32/5,755.81 = 2,081.15/x
3. Step 3: Cross multiply
   3,840.32x = 5,755.81 × 2,081.15
4. Step 4: Simplify right side
   3,840.32x = 11,978,711.67
5. Step 5: Solve for x
   x = 11,978,711.67/3,840.32
6. Step 6: Final answer
   x = 3,119.20