Finding the Fourth Proportional to 2,721.88, 4,080.94 and 1,078.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.88 : 4,080.94 = 1,078.62 : x
2. Step 2: Convert to fraction form
   2,721.88/4,080.94 = 1,078.62/x
3. Step 3: Cross multiply
   2,721.88x = 4,080.94 × 1,078.62
4. Step 4: Simplify right side
   2,721.88x = 4,401,783.50
5. Step 5: Solve for x
   x = 4,401,783.50/2,721.88
6. Step 6: Final answer
   x = 1,617.18