Finding the Fourth Proportional to 2,308.40, 3,462.76 and 664.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.40 : 3,462.76 = 664.96 : x
2. Step 2: Convert to fraction form
   2,308.40/3,462.76 = 664.96/x
3. Step 3: Cross multiply
   2,308.40x = 3,462.76 × 664.96
4. Step 4: Simplify right side
   2,308.40x = 2,302,596.89
5. Step 5: Solve for x
   x = 2,302,596.89/2,308.40
6. Step 6: Final answer
   x = 997.49