Finding the Fourth Proportional to 2,757.98, 4,137.42 and 809.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,757.98 : 4,137.42 = 809.94 : x
2. Step 2: Convert to fraction form
   2,757.98/4,137.42 = 809.94/x
3. Step 3: Cross multiply
   2,757.98x = 4,137.42 × 809.94
4. Step 4: Simplify right side
   2,757.98x = 3,351,061.95
5. Step 5: Solve for x
   x = 3,351,061.95/2,757.98
6. Step 6: Final answer
   x = 1,215.04