Finding the Fourth Proportional to 3,594.72, 5,391.12 and 997.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,594.72 : 5,391.12 = 997.80 : x
2. Step 2: Convert to fraction form
   3,594.72/5,391.12 = 997.80/x
3. Step 3: Cross multiply
   3,594.72x = 5,391.12 × 997.80
4. Step 4: Simplify right side
   3,594.72x = 5,379,259.54
5. Step 5: Solve for x
   x = 5,379,259.54/3,594.72
6. Step 6: Final answer
   x = 1,496.43