Finding the Fourth Proportional to 3,609.06, 5,413.72 and 1,853.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,609.06 : 5,413.72 = 1,853.59 : x
2. Step 2: Convert to fraction form
   3,609.06/5,413.72 = 1,853.59/x
3. Step 3: Cross multiply
   3,609.06x = 5,413.72 × 1,853.59
4. Step 4: Simplify right side
   3,609.06x = 10,034,817.25
5. Step 5: Solve for x
   x = 10,034,817.25/3,609.06
6. Step 6: Final answer
   x = 2,780.45