Finding the Fourth Proportional to 3,948.72, 5,449.52 and 2,270.65

Step by Step Solution

1. Step 1: Write the proportion equation
   3,948.72 : 5,449.52 = 2,270.65 : x
2. Step 2: Convert to fraction form
   3,948.72/5,449.52 = 2,270.65/x
3. Step 3: Cross multiply
   3,948.72x = 5,449.52 × 2,270.65
4. Step 4: Simplify right side
   3,948.72x = 12,373,938.89
5. Step 5: Solve for x
   x = 12,373,938.89/3,948.72
6. Step 6: Final answer
   x = 3,133.66