Finding the Fourth Proportional to 2,555.91, 3,831.90 and 995.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.91 : 3,831.90 = 995.72 : x
2. Step 2: Convert to fraction form
   2,555.91/3,831.90 = 995.72/x
3. Step 3: Cross multiply
   2,555.91x = 3,831.90 × 995.72
4. Step 4: Simplify right side
   2,555.91x = 3,815,480.31
5. Step 5: Solve for x
   x = 3,815,480.31/2,555.91
6. Step 6: Final answer
   x = 1,492.81