Finding the Fourth Proportional to 3,949.27, 5,449.83 and 2,180.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.27 : 5,449.83 = 2,180.85 : x
2. Step 2: Convert to fraction form
   3,949.27/5,449.83 = 2,180.85/x
3. Step 3: Cross multiply
   3,949.27x = 5,449.83 × 2,180.85
4. Step 4: Simplify right side
   3,949.27x = 11,885,261.76
5. Step 5: Solve for x
   x = 11,885,261.76/3,949.27
6. Step 6: Final answer
   x = 3,009.48