Finding the Fourth Proportional to 2,112.61, 3,168.54 and 573.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.61 : 3,168.54 = 573.25 : x
2. Step 2: Convert to fraction form
   2,112.61/3,168.54 = 573.25/x
3. Step 3: Cross multiply
   2,112.61x = 3,168.54 × 573.25
4. Step 4: Simplify right side
   2,112.61x = 1,816,365.56
5. Step 5: Solve for x
   x = 1,816,365.56/2,112.61
6. Step 6: Final answer
   x = 859.77