Finding the Fourth Proportional to 2,459.55, 3,690.85 and 998.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,459.55 : 3,690.85 = 998.72 : x
2. Step 2: Convert to fraction form
   2,459.55/3,690.85 = 998.72/x
3. Step 3: Cross multiply
   2,459.55x = 3,690.85 × 998.72
4. Step 4: Simplify right side
   2,459.55x = 3,686,104.76
5. Step 5: Solve for x
   x = 3,686,104.76/2,459.55
6. Step 6: Final answer
   x = 1,498.69