Finding the Fourth Proportional to 2,002.72, 3,003.60 and 906.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.72 : 3,003.60 = 906.56 : x
2. Step 2: Convert to fraction form
   2,002.72/3,003.60 = 906.56/x
3. Step 3: Cross multiply
   2,002.72x = 3,003.60 × 906.56
4. Step 4: Simplify right side
   2,002.72x = 2,722,943.62
5. Step 5: Solve for x
   x = 2,722,943.62/2,002.72
6. Step 6: Final answer
   x = 1,359.62