Finding the Fourth Proportional to 3,913.98, 5,401.85 and 2,422.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,913.98 : 5,401.85 = 2,422.38 : x
2. Step 2: Convert to fraction form
   3,913.98/5,401.85 = 2,422.38/x
3. Step 3: Cross multiply
   3,913.98x = 5,401.85 × 2,422.38
4. Step 4: Simplify right side
   3,913.98x = 13,085,294.28
5. Step 5: Solve for x
   x = 13,085,294.28/3,913.98
6. Step 6: Final answer
   x = 3,343.22