Finding the Fourth Proportional to 2,856.27, 3,940.77 and 1,863

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.27 : 3,940.77 = 1,863 : x
2. Step 2: Convert to fraction form
   2,856.27/3,940.77 = 1,863/x
3. Step 3: Cross multiply
   2,856.27x = 3,940.77 × 1,863
4. Step 4: Simplify right side
   2,856.27x = 7,341,654.51
5. Step 5: Solve for x
   x = 7,341,654.51/2,856.27
6. Step 6: Final answer
   x = 2,570.36