Finding the Fourth Proportional to 3,589.52, 5,383.80 and 992.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,589.52 : 5,383.80 = 992.72 : x
2. Step 2: Convert to fraction form
   3,589.52/5,383.80 = 992.72/x
3. Step 3: Cross multiply
   3,589.52x = 5,383.80 × 992.72
4. Step 4: Simplify right side
   3,589.52x = 5,344,605.94
5. Step 5: Solve for x
   x = 5,344,605.94/3,589.52
6. Step 6: Final answer
   x = 1,488.95