Finding the Fourth Proportional to 2,861.83, 3,947.69 and 2,064.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861.83 : 3,947.69 = 2,064.26 : x
2. Step 2: Convert to fraction form
   2,861.83/3,947.69 = 2,064.26/x
3. Step 3: Cross multiply
   2,861.83x = 3,947.69 × 2,064.26
4. Step 4: Simplify right side
   2,861.83x = 8,149,050.87
5. Step 5: Solve for x
   x = 8,149,050.87/2,861.83
6. Step 6: Final answer
   x = 2,847.50