Finding the Fourth Proportional to 2,638.56, 3,958.74 and 995.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.56 : 3,958.74 = 995.34 : x
2. Step 2: Convert to fraction form
   2,638.56/3,958.74 = 995.34/x
3. Step 3: Cross multiply
   2,638.56x = 3,958.74 × 995.34
4. Step 4: Simplify right side
   2,638.56x = 3,940,292.27
5. Step 5: Solve for x
   x = 3,940,292.27/2,638.56
6. Step 6: Final answer
   x = 1,493.35