Finding the Fourth Proportional to 2,550.25, 3,826.01 and 818.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.25 : 3,826.01 = 818.88 : x
2. Step 2: Convert to fraction form
   2,550.25/3,826.01 = 818.88/x
3. Step 3: Cross multiply
   2,550.25x = 3,826.01 × 818.88
4. Step 4: Simplify right side
   2,550.25x = 3,133,043.07
5. Step 5: Solve for x
   x = 3,133,043.07/2,550.25
6. Step 6: Final answer
   x = 1,228.52