Finding the Fourth Proportional to 2,153.52, 3,231.32 and 998.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.52 : 3,231.32 = 998.96 : x
2. Step 2: Convert to fraction form
   2,153.52/3,231.32 = 998.96/x
3. Step 3: Cross multiply
   2,153.52x = 3,231.32 × 998.96
4. Step 4: Simplify right side
   2,153.52x = 3,227,959.43
5. Step 5: Solve for x
   x = 3,227,959.43/2,153.52
6. Step 6: Final answer
   x = 1,498.92