Finding the Fourth Proportional to 2,609.89, 3,914.83 and 662.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.89 : 3,914.83 = 662.09 : x
2. Step 2: Convert to fraction form
   2,609.89/3,914.83 = 662.09/x
3. Step 3: Cross multiply
   2,609.89x = 3,914.83 × 662.09
4. Step 4: Simplify right side
   2,609.89x = 2,591,958.35
5. Step 5: Solve for x
   x = 2,591,958.35/2,609.89
6. Step 6: Final answer
   x = 993.13