Finding the Fourth Proportional to 3,609.20, 5,410.52 and 1,872.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,609.20 : 5,410.52 = 1,872.56 : x
2. Step 2: Convert to fraction form
   3,609.20/5,410.52 = 1,872.56/x
3. Step 3: Cross multiply
   3,609.20x = 5,410.52 × 1,872.56
4. Step 4: Simplify right side
   3,609.20x = 10,131,523.33
5. Step 5: Solve for x
   x = 10,131,523.33/3,609.20
6. Step 6: Final answer
   x = 2,807.14