Finding the Fourth Proportional to 2,856.39, 4,285.10 and 1,008.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.39 : 4,285.10 = 1,008.59 : x
2. Step 2: Convert to fraction form
   2,856.39/4,285.10 = 1,008.59/x
3. Step 3: Cross multiply
   2,856.39x = 4,285.10 × 1,008.59
4. Step 4: Simplify right side
   2,856.39x = 4,321,882.54
5. Step 5: Solve for x
   x = 4,321,882.54/2,856.39
6. Step 6: Final answer
   x = 1,513.06