Finding the Fourth Proportional to 3,897.57, 5,378.81 and 2,404.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897.57 : 5,378.81 = 2,404.41 : x
2. Step 2: Convert to fraction form
   3,897.57/5,378.81 = 2,404.41/x
3. Step 3: Cross multiply
   3,897.57x = 5,378.81 × 2,404.41
4. Step 4: Simplify right side
   3,897.57x = 12,932,847.49
5. Step 5: Solve for x
   x = 12,932,847.49/3,897.57
6. Step 6: Final answer
   x = 3,318.18