Finding the Fourth Proportional to 1,589.69, 2,384.69 and 665.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,589.69 : 2,384.69 = 665.54 : x
2. Step 2: Convert to fraction form
   1,589.69/2,384.69 = 665.54/x
3. Step 3: Cross multiply
   1,589.69x = 2,384.69 × 665.54
4. Step 4: Simplify right side
   1,589.69x = 1,587,091.33
5. Step 5: Solve for x
   x = 1,587,091.33/1,589.69
6. Step 6: Final answer
   x = 998.37