Finding the Fourth Proportional to 2,098.82, 3,148.59 and 865.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,098.82 : 3,148.59 = 865.56 : x
2. Step 2: Convert to fraction form
   2,098.82/3,148.59 = 865.56/x
3. Step 3: Cross multiply
   2,098.82x = 3,148.59 × 865.56
4. Step 4: Simplify right side
   2,098.82x = 2,725,296.81
5. Step 5: Solve for x
   x = 2,725,296.81/2,098.82
6. Step 6: Final answer
   x = 1,298.49