Finding the Fourth Proportional to 2,578.82, 3,866.70 and 1,016.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.82 : 3,866.70 = 1,016.98 : x
2. Step 2: Convert to fraction form
   2,578.82/3,866.70 = 1,016.98/x
3. Step 3: Cross multiply
   2,578.82x = 3,866.70 × 1,016.98
4. Step 4: Simplify right side
   2,578.82x = 3,932,356.57
5. Step 5: Solve for x
   x = 3,932,356.57/2,578.82
6. Step 6: Final answer
   x = 1,524.87