Finding the Fourth Proportional to 2,762.54, 4,144.15 and 814.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,762.54 : 4,144.15 = 814.78 : x
2. Step 2: Convert to fraction form
   2,762.54/4,144.15 = 814.78/x
3. Step 3: Cross multiply
   2,762.54x = 4,144.15 × 814.78
4. Step 4: Simplify right side
   2,762.54x = 3,376,549.82
5. Step 5: Solve for x
   x = 3,376,549.82/2,762.54
6. Step 6: Final answer
   x = 1,222.26