Finding the Fourth Proportional to 1,061.85, 1,593.23 and 413.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.85 : 1,593.23 = 413.04 : x
2. Step 2: Convert to fraction form
   1,061.85/1,593.23 = 413.04/x
3. Step 3: Cross multiply
   1,061.85x = 1,593.23 × 413.04
4. Step 4: Simplify right side
   1,061.85x = 658,067.72
5. Step 5: Solve for x
   x = 658,067.72/1,061.85
6. Step 6: Final answer
   x = 619.74