Finding the Fourth Proportional to 2,767.74, 4,152.31 and 819.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,767.74 : 4,152.31 = 819.94 : x
2. Step 2: Convert to fraction form
   2,767.74/4,152.31 = 819.94/x
3. Step 3: Cross multiply
   2,767.74x = 4,152.31 × 819.94
4. Step 4: Simplify right side
   2,767.74x = 3,404,645.06
5. Step 5: Solve for x
   x = 3,404,645.06/2,767.74
6. Step 6: Final answer
   x = 1,230.12