Finding the Fourth Proportional to 2,766.84, 4,150.25 and 818.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.84 : 4,150.25 = 818.89 : x
2. Step 2: Convert to fraction form
   2,766.84/4,150.25 = 818.89/x
3. Step 3: Cross multiply
   2,766.84x = 4,150.25 × 818.89
4. Step 4: Simplify right side
   2,766.84x = 3,398,598.22
5. Step 5: Solve for x
   x = 3,398,598.22/2,766.84
6. Step 6: Final answer
   x = 1,228.33