Finding the Fourth Proportional to 2,640.48, 3,959.52 and 995.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.48 : 3,959.52 = 995.86 : x
2. Step 2: Convert to fraction form
   2,640.48/3,959.52 = 995.86/x
3. Step 3: Cross multiply
   2,640.48x = 3,959.52 × 995.86
4. Step 4: Simplify right side
   2,640.48x = 3,943,127.59
5. Step 5: Solve for x
   x = 3,943,127.59/2,640.48
6. Step 6: Final answer
   x = 1,493.34