Finding the Fourth Proportional to 2,112.86, 3,168.92 and 573.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.86 : 3,168.92 = 573.50 : x
2. Step 2: Convert to fraction form
   2,112.86/3,168.92 = 573.50/x
3. Step 3: Cross multiply
   2,112.86x = 3,168.92 × 573.50
4. Step 4: Simplify right side
   2,112.86x = 1,817,375.62
5. Step 5: Solve for x
   x = 1,817,375.62/2,112.86
6. Step 6: Final answer
   x = 860.15