Finding the Fourth Proportional to 1,608.94, 2,413.61 and 454.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.94 : 2,413.61 = 454.69 : x
2. Step 2: Convert to fraction form
   1,608.94/2,413.61 = 454.69/x
3. Step 3: Cross multiply
   1,608.94x = 2,413.61 × 454.69
4. Step 4: Simplify right side
   1,608.94x = 1,097,439.43
5. Step 5: Solve for x
   x = 1,097,439.43/1,608.94
6. Step 6: Final answer
   x = 682.09