Finding the Fourth Proportional to 2,856.96, 3,941.73 and 1,861.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.96 : 3,941.73 = 1,861.88 : x
2. Step 2: Convert to fraction form
   2,856.96/3,941.73 = 1,861.88/x
3. Step 3: Cross multiply
   2,856.96x = 3,941.73 × 1,861.88
4. Step 4: Simplify right side
   2,856.96x = 7,339,008.54
5. Step 5: Solve for x
   x = 7,339,008.54/2,856.96
6. Step 6: Final answer
   x = 2,568.82