Finding the Fourth Proportional to 3,644.40, 5,028.81 and 2,072.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,644.40 : 5,028.81 = 2,072.53 : x
2. Step 2: Convert to fraction form
   3,644.40/5,028.81 = 2,072.53/x
3. Step 3: Cross multiply
   3,644.40x = 5,028.81 × 2,072.53
4. Step 4: Simplify right side
   3,644.40x = 10,422,359.59
5. Step 5: Solve for x
   x = 10,422,359.59/3,644.40
6. Step 6: Final answer
   x = 2,859.83