Finding the Fourth Proportional to 3,871.27, 5,343.20 and 2,380.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.27 : 5,343.20 = 2,380.47 : x
2. Step 2: Convert to fraction form
   3,871.27/5,343.20 = 2,380.47/x
3. Step 3: Cross multiply
   3,871.27x = 5,343.20 × 2,380.47
4. Step 4: Simplify right side
   3,871.27x = 12,719,288.69
5. Step 5: Solve for x
   x = 12,719,288.69/3,871.27
6. Step 6: Final answer
   x = 3,285.56