Finding the Fourth Proportional to 2,834.64, 4,251.69 and 885.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,834.64 : 4,251.69 = 885.78 : x
2. Step 2: Convert to fraction form
   2,834.64/4,251.69 = 885.78/x
3. Step 3: Cross multiply
   2,834.64x = 4,251.69 × 885.78
4. Step 4: Simplify right side
   2,834.64x = 3,766,061.97
5. Step 5: Solve for x
   x = 3,766,061.97/2,834.64
6. Step 6: Final answer
   x = 1,328.59