Finding the Fourth Proportional to 3,949.15, 5,449.71 and 2,180.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.15 : 5,449.71 = 2,180.83 : x
2. Step 2: Convert to fraction form
   3,949.15/5,449.71 = 2,180.83/x
3. Step 3: Cross multiply
   3,949.15x = 5,449.71 × 2,180.83
4. Step 4: Simplify right side
   3,949.15x = 11,884,891.06
5. Step 5: Solve for x
   x = 11,884,891.06/3,949.15
6. Step 6: Final answer
   x = 3,009.48