Finding the Fourth Proportional to 2,168.41, 3,252.59 and 870.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.41 : 3,252.59 = 870.79 : x
2. Step 2: Convert to fraction form
   2,168.41/3,252.59 = 870.79/x
3. Step 3: Cross multiply
   2,168.41x = 3,252.59 × 870.79
4. Step 4: Simplify right side
   2,168.41x = 2,832,322.85
5. Step 5: Solve for x
   x = 2,832,322.85/2,168.41
6. Step 6: Final answer
   x = 1,306.17