Finding the Fourth Proportional to 2,280.16, 3,419.18 and 818.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.16 : 3,419.18 = 818.92 : x
2. Step 2: Convert to fraction form
   2,280.16/3,419.18 = 818.92/x
3. Step 3: Cross multiply
   2,280.16x = 3,419.18 × 818.92
4. Step 4: Simplify right side
   2,280.16x = 2,800,034.89
5. Step 5: Solve for x
   x = 2,800,034.89/2,280.16
6. Step 6: Final answer
   x = 1,228.00