Finding the Fourth Proportional to 2,819.25, 4,229.15 and 767.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.25 : 4,229.15 = 767.25 : x
2. Step 2: Convert to fraction form
   2,819.25/4,229.15 = 767.25/x
3. Step 3: Cross multiply
   2,819.25x = 4,229.15 × 767.25
4. Step 4: Simplify right side
   2,819.25x = 3,244,811.50
5. Step 5: Solve for x
   x = 3,244,811.50/2,819.25
6. Step 6: Final answer
   x = 1,150.95