Finding the Fourth Proportional to 2,431.12, 3,352.02 and 1,685.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.12 : 3,352.02 = 1,685.72 : x
2. Step 2: Convert to fraction form
   2,431.12/3,352.02 = 1,685.72/x
3. Step 3: Cross multiply
   2,431.12x = 3,352.02 × 1,685.72
4. Step 4: Simplify right side
   2,431.12x = 5,650,567.15
5. Step 5: Solve for x
   x = 5,650,567.15/2,431.12
6. Step 6: Final answer
   x = 2,324.27