Finding the Fourth Proportional to 1,571.34, 2,168.46 and 872.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.34 : 2,168.46 = 872.76 : x
2. Step 2: Convert to fraction form
   1,571.34/2,168.46 = 872.76/x
3. Step 3: Cross multiply
   1,571.34x = 2,168.46 × 872.76
4. Step 4: Simplify right side
   1,571.34x = 1,892,545.15
5. Step 5: Solve for x
   x = 1,892,545.15/1,571.34
6. Step 6: Final answer
   x = 1,204.41