Finding the Fourth Proportional to 2,856.82, 4,285.32 and 908.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.82 : 4,285.32 = 908.82 : x
2. Step 2: Convert to fraction form
   2,856.82/4,285.32 = 908.82/x
3. Step 3: Cross multiply
   2,856.82x = 4,285.32 × 908.82
4. Step 4: Simplify right side
   2,856.82x = 3,894,584.52
5. Step 5: Solve for x
   x = 3,894,584.52/2,856.82
6. Step 6: Final answer
   x = 1,363.26