Finding the Fourth Proportional to 2,459.72, 3,687.30 and 998.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,459.72 : 3,687.30 = 998.60 : x
2. Step 2: Convert to fraction form
   2,459.72/3,687.30 = 998.60/x
3. Step 3: Cross multiply
   2,459.72x = 3,687.30 × 998.60
4. Step 4: Simplify right side
   2,459.72x = 3,682,137.78
5. Step 5: Solve for x
   x = 3,682,137.78/2,459.72
6. Step 6: Final answer
   x = 1,496.97