Finding the Fourth Proportional to 300.43, 413.04 and 298.56

Step by Step Solution

1. Step 1: Write the proportion equation
   300.43 : 413.04 = 298.56 : x
2. Step 2: Convert to fraction form
   300.43/413.04 = 298.56/x
3. Step 3: Cross multiply
   300.43x = 413.04 × 298.56
4. Step 4: Simplify right side
   300.43x = 123,316.89
5. Step 5: Solve for x
   x = 123,316.89/300.43
6. Step 6: Final answer
   x = 410.46