Finding the Fourth Proportional to 2,002.81, 3,004.17 and 906.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.81 : 3,004.17 = 906.38 : x
2. Step 2: Convert to fraction form
   2,002.81/3,004.17 = 906.38/x
3. Step 3: Cross multiply
   2,002.81x = 3,004.17 × 906.38
4. Step 4: Simplify right side
   2,002.81x = 2,722,919.60
5. Step 5: Solve for x
   x = 2,722,919.60/2,002.81
6. Step 6: Final answer
   x = 1,359.55