Finding the Fourth Proportional to 3,606.86, 5,413.12 and 1,851.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,606.86 : 5,413.12 = 1,851.79 : x
2. Step 2: Convert to fraction form
   3,606.86/5,413.12 = 1,851.79/x
3. Step 3: Cross multiply
   3,606.86x = 5,413.12 × 1,851.79
4. Step 4: Simplify right side
   3,606.86x = 10,023,943.32
5. Step 5: Solve for x
   x = 10,023,943.32/3,606.86
6. Step 6: Final answer
   x = 2,779.14