Finding the Fourth Proportional to 3,949.60, 5,451.42 and 2,773.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.60 : 5,451.42 = 2,773.48 : x
2. Step 2: Convert to fraction form
   3,949.60/5,451.42 = 2,773.48/x
3. Step 3: Cross multiply
   3,949.60x = 5,451.42 × 2,773.48
4. Step 4: Simplify right side
   3,949.60x = 15,119,404.34
5. Step 5: Solve for x
   x = 15,119,404.34/3,949.60
6. Step 6: Final answer
   x = 3,828.08