Finding the Fourth Proportional to 3,115.42, 4,301.31 and 2,406.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,115.42 : 4,301.31 = 2,406.02 : x
2. Step 2: Convert to fraction form
   3,115.42/4,301.31 = 2,406.02/x
3. Step 3: Cross multiply
   3,115.42x = 4,301.31 × 2,406.02
4. Step 4: Simplify right side
   3,115.42x = 10,349,037.89
5. Step 5: Solve for x
   x = 10,349,037.89/3,115.42
6. Step 6: Final answer
   x = 3,321.88