Finding the Fourth Proportional to 3,337.89, 5,007.72 and 997.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,337.89 : 5,007.72 = 997.80 : x
2. Step 2: Convert to fraction form
   3,337.89/5,007.72 = 997.80/x
3. Step 3: Cross multiply
   3,337.89x = 5,007.72 × 997.80
4. Step 4: Simplify right side
   3,337.89x = 4,996,703.02
5. Step 5: Solve for x
   x = 4,996,703.02/3,337.89
6. Step 6: Final answer
   x = 1,496.96