Finding the Fourth Proportional to 2,460.21, 3,687.12 and 998.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,460.21 : 3,687.12 = 998.57 : x
2. Step 2: Convert to fraction form
   2,460.21/3,687.12 = 998.57/x
3. Step 3: Cross multiply
   2,460.21x = 3,687.12 × 998.57
4. Step 4: Simplify right side
   2,460.21x = 3,681,847.42
5. Step 5: Solve for x
   x = 3,681,847.42/2,460.21
6. Step 6: Final answer
   x = 1,496.56