Finding the Fourth Proportional to 3,822.42, 5,729.58 and 2,431.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,822.42 : 5,729.58 = 2,431.38 : x
2. Step 2: Convert to fraction form
   3,822.42/5,729.58 = 2,431.38/x
3. Step 3: Cross multiply
   3,822.42x = 5,729.58 × 2,431.38
4. Step 4: Simplify right side
   3,822.42x = 13,930,786.22
5. Step 5: Solve for x
   x = 13,930,786.22/3,822.42
6. Step 6: Final answer
   x = 3,644.49