Finding the Fourth Proportional to 2,106.27, 3,159.60 and 873.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.27 : 3,159.60 = 873.69 : x
2. Step 2: Convert to fraction form
   2,106.27/3,159.60 = 873.69/x
3. Step 3: Cross multiply
   2,106.27x = 3,159.60 × 873.69
4. Step 4: Simplify right side
   2,106.27x = 2,760,510.92
5. Step 5: Solve for x
   x = 2,760,510.92/2,106.27
6. Step 6: Final answer
   x = 1,310.62