Finding the Fourth Proportional to 2,168.52, 3,253.23 and 870.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.52 : 3,253.23 = 870.09 : x
2. Step 2: Convert to fraction form
   2,168.52/3,253.23 = 870.09/x
3. Step 3: Cross multiply
   2,168.52x = 3,253.23 × 870.09
4. Step 4: Simplify right side
   2,168.52x = 2,830,614.29
5. Step 5: Solve for x
   x = 2,830,614.29/2,168.52
6. Step 6: Final answer
   x = 1,305.32