Finding the Fourth Proportional to 3,411.50, 5,118.45 and 1,681.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,411.50 : 5,118.45 = 1,681.34 : x
2. Step 2: Convert to fraction form
   3,411.50/5,118.45 = 1,681.34/x
3. Step 3: Cross multiply
   3,411.50x = 5,118.45 × 1,681.34
4. Step 4: Simplify right side
   3,411.50x = 8,605,854.72
5. Step 5: Solve for x
   x = 8,605,854.72/3,411.50
6. Step 6: Final answer
   x = 2,522.60