Finding the Fourth Proportional to 2,638.83, 3,955.78 and 996.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.83 : 3,955.78 = 996.46 : x
2. Step 2: Convert to fraction form
   2,638.83/3,955.78 = 996.46/x
3. Step 3: Cross multiply
   2,638.83x = 3,955.78 × 996.46
4. Step 4: Simplify right side
   2,638.83x = 3,941,776.54
5. Step 5: Solve for x
   x = 3,941,776.54/2,638.83
6. Step 6: Final answer
   x = 1,493.76