Finding the Fourth Proportional to 2,002.20, 3,004.85 and 907.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.20 : 3,004.85 = 907.34 : x
2. Step 2: Convert to fraction form
   2,002.20/3,004.85 = 907.34/x
3. Step 3: Cross multiply
   2,002.20x = 3,004.85 × 907.34
4. Step 4: Simplify right side
   2,002.20x = 2,726,401.04
5. Step 5: Solve for x
   x = 2,726,401.04/2,002.20
6. Step 6: Final answer
   x = 1,361.70