Finding the Fourth Proportional to 2,458.79, 3,689.00 and 997.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,458.79 : 3,689.00 = 997.55 : x
2. Step 2: Convert to fraction form
   2,458.79/3,689.00 = 997.55/x
3. Step 3: Cross multiply
   2,458.79x = 3,689.00 × 997.55
4. Step 4: Simplify right side
   2,458.79x = 3,679,956.96
5. Step 5: Solve for x
   x = 3,679,956.96/2,458.79
6. Step 6: Final answer
   x = 1,496.65