Finding the Fourth Proportional to 2,766.74, 4,150.81 and 818.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.74 : 4,150.81 = 818.94 : x
2. Step 2: Convert to fraction form
   2,766.74/4,150.81 = 818.94/x
3. Step 3: Cross multiply
   2,766.74x = 4,150.81 × 818.94
4. Step 4: Simplify right side
   2,766.74x = 3,399,264.34
5. Step 5: Solve for x
   x = 3,399,264.34/2,766.74
6. Step 6: Final answer
   x = 1,228.62