Finding the Fourth Proportional to 2,612.79, 3,915.50 and 1,443.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.79 : 3,915.50 = 1,443.32 : x
2. Step 2: Convert to fraction form
   2,612.79/3,915.50 = 1,443.32/x
3. Step 3: Cross multiply
   2,612.79x = 3,915.50 × 1,443.32
4. Step 4: Simplify right side
   2,612.79x = 5,651,319.46
5. Step 5: Solve for x
   x = 5,651,319.46/2,612.79
6. Step 6: Final answer
   x = 2,162.94