Finding the Fourth Proportional to 3,185.52, 4,772.06 and 2,086.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,185.52 : 4,772.06 = 2,086.55 : x
2. Step 2: Convert to fraction form
   3,185.52/4,772.06 = 2,086.55/x
3. Step 3: Cross multiply
   3,185.52x = 4,772.06 × 2,086.55
4. Step 4: Simplify right side
   3,185.52x = 9,957,141.79
5. Step 5: Solve for x
   x = 9,957,141.79/3,185.52
6. Step 6: Final answer
   x = 3,125.75