Finding the Fourth Proportional to 2,612.85, 3,915.60 and 1,443.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.85 : 3,915.60 = 1,443.39 : x
2. Step 2: Convert to fraction form
   2,612.85/3,915.60 = 1,443.39/x
3. Step 3: Cross multiply
   2,612.85x = 3,915.60 × 1,443.39
4. Step 4: Simplify right side
   2,612.85x = 5,651,737.88
5. Step 5: Solve for x
   x = 5,651,737.88/2,612.85
6. Step 6: Final answer
   x = 2,163.05