Finding the Fourth Proportional to 2,766.60, 4,149.77 and 818.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.60 : 4,149.77 = 818.82 : x
2. Step 2: Convert to fraction form
   2,766.60/4,149.77 = 818.82/x
3. Step 3: Cross multiply
   2,766.60x = 4,149.77 × 818.82
4. Step 4: Simplify right side
   2,766.60x = 3,397,910.58
5. Step 5: Solve for x
   x = 3,397,910.58/2,766.60
6. Step 6: Final answer
   x = 1,228.19