Finding the Fourth Proportional to 2,856.34, 4,284.82 and 908.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.34 : 4,284.82 = 908.09 : x
2. Step 2: Convert to fraction form
   2,856.34/4,284.82 = 908.09/x
3. Step 3: Cross multiply
   2,856.34x = 4,284.82 × 908.09
4. Step 4: Simplify right side
   2,856.34x = 3,890,981.90
5. Step 5: Solve for x
   x = 3,890,981.90/2,856.34
6. Step 6: Final answer
   x = 1,362.23