Finding the Fourth Proportional to 2,949.06, 4,423.56 and 757.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,949.06 : 4,423.56 = 757.78 : x
2. Step 2: Convert to fraction form
   2,949.06/4,423.56 = 757.78/x
3. Step 3: Cross multiply
   2,949.06x = 4,423.56 × 757.78
4. Step 4: Simplify right side
   2,949.06x = 3,352,085.30
5. Step 5: Solve for x
   x = 3,352,085.30/2,949.06
6. Step 6: Final answer
   x = 1,136.66