Finding the Fourth Proportional to 2,095.32, 3,140.22 and 861.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.32 : 3,140.22 = 861.27 : x
2. Step 2: Convert to fraction form
   2,095.32/3,140.22 = 861.27/x
3. Step 3: Cross multiply
   2,095.32x = 3,140.22 × 861.27
4. Step 4: Simplify right side
   2,095.32x = 2,704,577.28
5. Step 5: Solve for x
   x = 2,704,577.28/2,095.32
6. Step 6: Final answer
   x = 1,290.77