Finding the Fourth Proportional to 2,231.55, 3,347.69 and 998.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.55 : 3,347.69 = 998.96 : x
2. Step 2: Convert to fraction form
   2,231.55/3,347.69 = 998.96/x
3. Step 3: Cross multiply
   2,231.55x = 3,347.69 × 998.96
4. Step 4: Simplify right side
   2,231.55x = 3,344,186.67
5. Step 5: Solve for x
   x = 3,344,186.67/2,231.55
6. Step 6: Final answer
   x = 1,498.59