Finding the Fourth Proportional to 2,100.92, 3,152.69 and 868.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.92 : 3,152.69 = 868.10 : x
2. Step 2: Convert to fraction form
   2,100.92/3,152.69 = 868.10/x
3. Step 3: Cross multiply
   2,100.92x = 3,152.69 × 868.10
4. Step 4: Simplify right side
   2,100.92x = 2,736,845.85
5. Step 5: Solve for x
   x = 2,736,845.85/2,100.92
6. Step 6: Final answer
   x = 1,302.69