Finding the Fourth Proportional to 3,675.25, 5,072.17 and 2,019.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,675.25 : 5,072.17 = 2,019.57 : x
2. Step 2: Convert to fraction form
   3,675.25/5,072.17 = 2,019.57/x
3. Step 3: Cross multiply
   3,675.25x = 5,072.17 × 2,019.57
4. Step 4: Simplify right side
   3,675.25x = 10,243,592.27
5. Step 5: Solve for x
   x = 10,243,592.27/3,675.25
6. Step 6: Final answer
   x = 2,787.18