Finding the Fourth Proportional to 2,724.72, 4,087.69 and 993.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,724.72 : 4,087.69 = 993.35 : x
2. Step 2: Convert to fraction form
   2,724.72/4,087.69 = 993.35/x
3. Step 3: Cross multiply
   2,724.72x = 4,087.69 × 993.35
4. Step 4: Simplify right side
   2,724.72x = 4,060,481.46
5. Step 5: Solve for x
   x = 4,060,481.46/2,724.72
6. Step 6: Final answer
   x = 1,490.24