Finding the Fourth Proportional to 2,856.96, 4,282.38 and 1,866.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.96 : 4,282.38 = 1,866.67 : x
2. Step 2: Convert to fraction form
   2,856.96/4,282.38 = 1,866.67/x
3. Step 3: Cross multiply
   2,856.96x = 4,282.38 × 1,866.67
4. Step 4: Simplify right side
   2,856.96x = 7,993,779.57
5. Step 5: Solve for x
   x = 7,993,779.57/2,856.96
6. Step 6: Final answer
   x = 2,798.00