Finding the Fourth Proportional to 2,098.82, 3,148.17 and 865.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,098.82 : 3,148.17 = 865.30 : x
2. Step 2: Convert to fraction form
   2,098.82/3,148.17 = 865.30/x
3. Step 3: Cross multiply
   2,098.82x = 3,148.17 × 865.30
4. Step 4: Simplify right side
   2,098.82x = 2,724,111.50
5. Step 5: Solve for x
   x = 2,724,111.50/2,098.82
6. Step 6: Final answer
   x = 1,297.93