Finding the Fourth Proportional to 2,095.34, 3,140.24 and 861.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.34 : 3,140.24 = 861.03 : x
2. Step 2: Convert to fraction form
   2,095.34/3,140.24 = 861.03/x
3. Step 3: Cross multiply
   2,095.34x = 3,140.24 × 861.03
4. Step 4: Simplify right side
   2,095.34x = 2,703,836.54
5. Step 5: Solve for x
   x = 2,703,836.54/2,095.34
6. Step 6: Final answer
   x = 1,290.41