Finding the Fourth Proportional to 2,550.84, 3,823.83 and 818.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.84 : 3,823.83 = 818.25 : x
2. Step 2: Convert to fraction form
   2,550.84/3,823.83 = 818.25/x
3. Step 3: Cross multiply
   2,550.84x = 3,823.83 × 818.25
4. Step 4: Simplify right side
   2,550.84x = 3,128,848.90
5. Step 5: Solve for x
   x = 3,128,848.90/2,550.84
6. Step 6: Final answer
   x = 1,226.60