Finding the Fourth Proportional to 2,308.65, 3,463.56 and 665.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.65 : 3,463.56 = 665.31 : x
2. Step 2: Convert to fraction form
   2,308.65/3,463.56 = 665.31/x
3. Step 3: Cross multiply
   2,308.65x = 3,463.56 × 665.31
4. Step 4: Simplify right side
   2,308.65x = 2,304,341.10
5. Step 5: Solve for x
   x = 2,304,341.10/2,308.65
6. Step 6: Final answer
   x = 998.13