Finding the Fourth Proportional to 2,009.02, 3,012.40 and 912.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,009.02 : 3,012.40 = 912.04 : x
2. Step 2: Convert to fraction form
   2,009.02/3,012.40 = 912.04/x
3. Step 3: Cross multiply
   2,009.02x = 3,012.40 × 912.04
4. Step 4: Simplify right side
   2,009.02x = 2,747,429.30
5. Step 5: Solve for x
   x = 2,747,429.30/2,009.02
6. Step 6: Final answer
   x = 1,367.55