Finding the Fourth Proportional to 2,472.72, 3,706.64 and 1,086.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.72 : 3,706.64 = 1,086.81 : x
2. Step 2: Convert to fraction form
   2,472.72/3,706.64 = 1,086.81/x
3. Step 3: Cross multiply
   2,472.72x = 3,706.64 × 1,086.81
4. Step 4: Simplify right side
   2,472.72x = 4,028,413.42
5. Step 5: Solve for x
   x = 4,028,413.42/2,472.72
6. Step 6: Final answer
   x = 1,629.14