Finding the Fourth Proportional to 3,807.48, 5,255.92 and 2,315.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,807.48 : 5,255.92 = 2,315.86 : x
2. Step 2: Convert to fraction form
   3,807.48/5,255.92 = 2,315.86/x
3. Step 3: Cross multiply
   3,807.48x = 5,255.92 × 2,315.86
4. Step 4: Simplify right side
   3,807.48x = 12,171,974.89
5. Step 5: Solve for x
   x = 12,171,974.89/3,807.48
6. Step 6: Final answer
   x = 3,196.86