Finding the Fourth Proportional to 2,112.50, 3,168.76 and 573.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.50 : 3,168.76 = 573.50 : x
2. Step 2: Convert to fraction form
   2,112.50/3,168.76 = 573.50/x
3. Step 3: Cross multiply
   2,112.50x = 3,168.76 × 573.50
4. Step 4: Simplify right side
   2,112.50x = 1,817,283.86
5. Step 5: Solve for x
   x = 1,817,283.86/2,112.50
6. Step 6: Final answer
   x = 860.25