Finding the Fourth Proportional to 3,949.25, 5,450.25 and 2,270.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.25 : 5,450.25 = 2,270.72 : x
2. Step 2: Convert to fraction form
   3,949.25/5,450.25 = 2,270.72/x
3. Step 3: Cross multiply
   3,949.25x = 5,450.25 × 2,270.72
4. Step 4: Simplify right side
   3,949.25x = 12,375,964.43
5. Step 5: Solve for x
   x = 12,375,964.43/3,949.25
6. Step 6: Final answer
   x = 3,133.75