Finding the Fourth Proportional to 2,578.41, 3,868.33 and 848.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.41 : 3,868.33 = 848.25 : x
2. Step 2: Convert to fraction form
   2,578.41/3,868.33 = 848.25/x
3. Step 3: Cross multiply
   2,578.41x = 3,868.33 × 848.25
4. Step 4: Simplify right side
   2,578.41x = 3,281,310.92
5. Step 5: Solve for x
   x = 3,281,310.92/2,578.41
6. Step 6: Final answer
   x = 1,272.61