Finding the Fourth Proportional to 1,589.41, 2,383.82 and 664.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,589.41 : 2,383.82 = 664.72 : x
2. Step 2: Convert to fraction form
   1,589.41/2,383.82 = 664.72/x
3. Step 3: Cross multiply
   1,589.41x = 2,383.82 × 664.72
4. Step 4: Simplify right side
   1,589.41x = 1,584,557.59
5. Step 5: Solve for x
   x = 1,584,557.59/1,589.41
6. Step 6: Final answer
   x = 996.95