Finding the Fourth Proportional to 2,168.33, 3,252.89 and 869.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.33 : 3,252.89 = 869.90 : x
2. Step 2: Convert to fraction form
   2,168.33/3,252.89 = 869.90/x
3. Step 3: Cross multiply
   2,168.33x = 3,252.89 × 869.90
4. Step 4: Simplify right side
   2,168.33x = 2,829,674.92
5. Step 5: Solve for x
   x = 2,829,674.92/2,168.33
6. Step 6: Final answer
   x = 1,305.00