Finding the Fourth Proportional to 2,092.62, 3,141.47 and 861.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,092.62 : 3,141.47 = 861.02 : x
2. Step 2: Convert to fraction form
   2,092.62/3,141.47 = 861.02/x
3. Step 3: Cross multiply
   2,092.62x = 3,141.47 × 861.02
4. Step 4: Simplify right side
   2,092.62x = 2,704,868.50
5. Step 5: Solve for x
   x = 2,704,868.50/2,092.62
6. Step 6: Final answer
   x = 1,292.58