Finding the Fourth Proportional to 1,571.56, 2,168.50 and 872.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.56 : 2,168.50 = 872.92 : x
2. Step 2: Convert to fraction form
   1,571.56/2,168.50 = 872.92/x
3. Step 3: Cross multiply
   1,571.56x = 2,168.50 × 872.92
4. Step 4: Simplify right side
   1,571.56x = 1,892,927.02
5. Step 5: Solve for x
   x = 1,892,927.02/1,571.56
6. Step 6: Final answer
   x = 1,204.49