Finding the Fourth Proportional to 2,550.82, 3,825.86 and 819.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.82 : 3,825.86 = 819.22 : x
2. Step 2: Convert to fraction form
   2,550.82/3,825.86 = 819.22/x
3. Step 3: Cross multiply
   2,550.82x = 3,825.86 × 819.22
4. Step 4: Simplify right side
   2,550.82x = 3,134,201.90
5. Step 5: Solve for x
   x = 3,134,201.90/2,550.82
6. Step 6: Final answer
   x = 1,228.71