Finding the Fourth Proportional to 3,915.95, 5,400.85 and 2,422.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915.95 : 5,400.85 = 2,422.82 : x
2. Step 2: Convert to fraction form
   3,915.95/5,400.85 = 2,422.82/x
3. Step 3: Cross multiply
   3,915.95x = 5,400.85 × 2,422.82
4. Step 4: Simplify right side
   3,915.95x = 13,085,287.40
5. Step 5: Solve for x
   x = 13,085,287.40/3,915.95
6. Step 6: Final answer
   x = 3,341.54