Finding the Fourth Proportional to 2,064.78, 3,097.27 and 677.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.78 : 3,097.27 = 677.55 : x
2. Step 2: Convert to fraction form
   2,064.78/3,097.27 = 677.55/x
3. Step 3: Cross multiply
   2,064.78x = 3,097.27 × 677.55
4. Step 4: Simplify right side
   2,064.78x = 2,098,567.75
5. Step 5: Solve for x
   x = 2,098,567.75/2,064.78
6. Step 6: Final answer
   x = 1,016.36