Finding the Fourth Proportional to 3,949.79, 5,450.72 and 2,181.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.79 : 5,450.72 = 2,181.52 : x
2. Step 2: Convert to fraction form
   3,949.79/5,450.72 = 2,181.52/x
3. Step 3: Cross multiply
   3,949.79x = 5,450.72 × 2,181.52
4. Step 4: Simplify right side
   3,949.79x = 11,890,854.69
5. Step 5: Solve for x
   x = 11,890,854.69/3,949.79
6. Step 6: Final answer
   x = 3,010.50