Finding the Fourth Proportional to 2,638.31, 3,959.01 and 996.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.31 : 3,959.01 = 996.00 : x
2. Step 2: Convert to fraction form
   2,638.31/3,959.01 = 996.00/x
3. Step 3: Cross multiply
   2,638.31x = 3,959.01 × 996.00
4. Step 4: Simplify right side
   2,638.31x = 3,943,159.11
5. Step 5: Solve for x
   x = 3,943,159.11/2,638.31
6. Step 6: Final answer
   x = 1,494.58