Finding the Fourth Proportional to 1,571.59, 2,168.81 and 873.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.59 : 2,168.81 = 873.01 : x
2. Step 2: Convert to fraction form
   1,571.59/2,168.81 = 873.01/x
3. Step 3: Cross multiply
   1,571.59x = 2,168.81 × 873.01
4. Step 4: Simplify right side
   1,571.59x = 1,893,392.82
5. Step 5: Solve for x
   x = 1,893,392.82/1,571.59
6. Step 6: Final answer
   x = 1,204.76