Finding the Fourth Proportional to 1,608.86, 2,413.32 and 514.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.86 : 2,413.32 = 514.15 : x
2. Step 2: Convert to fraction form
   1,608.86/2,413.32 = 514.15/x
3. Step 3: Cross multiply
   1,608.86x = 2,413.32 × 514.15
4. Step 4: Simplify right side
   1,608.86x = 1,240,808.48
5. Step 5: Solve for x
   x = 1,240,808.48/1,608.86
6. Step 6: Final answer
   x = 771.23