Finding the Fourth Proportional to 3,061.22, 4,588.86 and 1,211.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.22 : 4,588.86 = 1,211.72 : x
2. Step 2: Convert to fraction form
   3,061.22/4,588.86 = 1,211.72/x
3. Step 3: Cross multiply
   3,061.22x = 4,588.86 × 1,211.72
4. Step 4: Simplify right side
   3,061.22x = 5,560,413.44
5. Step 5: Solve for x
   x = 5,560,413.44/3,061.22
6. Step 6: Final answer
   x = 1,816.40