Finding the Fourth Proportional to 1,329.34, 1,993.34 and 404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,329.34 : 1,993.34 = 404.72 : x
2. Step 2: Convert to fraction form
   1,329.34/1,993.34 = 404.72/x
3. Step 3: Cross multiply
   1,329.34x = 1,993.34 × 404.72
4. Step 4: Simplify right side
   1,329.34x = 806,744.56
5. Step 5: Solve for x
   x = 806,744.56/1,329.34
6. Step 6: Final answer
   x = 606.88