Finding the Fourth Proportional to 2,723.72, 4,086.12 and 993.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,723.72 : 4,086.12 = 993.56 : x
2. Step 2: Convert to fraction form
   2,723.72/4,086.12 = 993.56/x
3. Step 3: Cross multiply
   2,723.72x = 4,086.12 × 993.56
4. Step 4: Simplify right side
   2,723.72x = 4,059,805.39
5. Step 5: Solve for x
   x = 4,059,805.39/2,723.72
6. Step 6: Final answer
   x = 1,490.54