Finding the Fourth Proportional to 3,949.58, 5,449.80 and 2,271.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.58 : 5,449.80 = 2,271.05 : x
2. Step 2: Convert to fraction form
   3,949.58/5,449.80 = 2,271.05/x
3. Step 3: Cross multiply
   3,949.58x = 5,449.80 × 2,271.05
4. Step 4: Simplify right side
   3,949.58x = 12,376,768.29
5. Step 5: Solve for x
   x = 12,376,768.29/3,949.58
6. Step 6: Final answer
   x = 3,133.69