Finding the Fourth Proportional to 2,431.62, 3,352.71 and 1,686.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.62 : 3,352.71 = 1,686.22 : x
2. Step 2: Convert to fraction form
   2,431.62/3,352.71 = 1,686.22/x
3. Step 3: Cross multiply
   2,431.62x = 3,352.71 × 1,686.22
4. Step 4: Simplify right side
   2,431.62x = 5,653,406.66
5. Step 5: Solve for x
   x = 5,653,406.66/2,431.62
6. Step 6: Final answer
   x = 2,324.95