Finding the Fourth Proportional to 3,644.06, 5,028.90 and 2,072.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,644.06 : 5,028.90 = 2,072.42 : x
2. Step 2: Convert to fraction form
   3,644.06/5,028.90 = 2,072.42/x
3. Step 3: Cross multiply
   3,644.06x = 5,028.90 × 2,072.42
4. Step 4: Simplify right side
   3,644.06x = 10,421,992.94
5. Step 5: Solve for x
   x = 10,421,992.94/3,644.06
6. Step 6: Final answer
   x = 2,859.99