Finding the Fourth Proportional to 3,952.72, 5,453.68 and 2,380.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,952.72 : 5,453.68 = 2,380.80 : x
2. Step 2: Convert to fraction form
   3,952.72/5,453.68 = 2,380.80/x
3. Step 3: Cross multiply
   3,952.72x = 5,453.68 × 2,380.80
4. Step 4: Simplify right side
   3,952.72x = 12,984,121.34
5. Step 5: Solve for x
   x = 12,984,121.34/3,952.72
6. Step 6: Final answer
   x = 3,284.86