Finding the Fourth Proportional to 2,640.82, 3,960.27 and 996.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.82 : 3,960.27 = 996.52 : x
2. Step 2: Convert to fraction form
   2,640.82/3,960.27 = 996.52/x
3. Step 3: Cross multiply
   2,640.82x = 3,960.27 × 996.52
4. Step 4: Simplify right side
   2,640.82x = 3,946,488.26
5. Step 5: Solve for x
   x = 3,946,488.26/2,640.82
6. Step 6: Final answer
   x = 1,494.42