Finding the Fourth Proportional to 2,766.42, 4,150.50 and 818.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.42 : 4,150.50 = 818.64 : x
2. Step 2: Convert to fraction form
   2,766.42/4,150.50 = 818.64/x
3. Step 3: Cross multiply
   2,766.42x = 4,150.50 × 818.64
4. Step 4: Simplify right side
   2,766.42x = 3,397,765.32
5. Step 5: Solve for x
   x = 3,397,765.32/2,766.42
6. Step 6: Final answer
   x = 1,228.22