Finding the Fourth Proportional to 2,146.73, 3,221.72 and 1,571.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.73 : 3,221.72 = 1,571.09 : x
2. Step 2: Convert to fraction form
   2,146.73/3,221.72 = 1,571.09/x
3. Step 3: Cross multiply
   2,146.73x = 3,221.72 × 1,571.09
4. Step 4: Simplify right side
   2,146.73x = 5,061,604.22
5. Step 5: Solve for x
   x = 5,061,604.22/2,146.73
6. Step 6: Final answer
   x = 2,357.82