Finding the Fourth Proportional to 2,489.34, 3,434.60 and 1,604.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489.34 : 3,434.60 = 1,604.42 : x
2. Step 2: Convert to fraction form
   2,489.34/3,434.60 = 1,604.42/x
3. Step 3: Cross multiply
   2,489.34x = 3,434.60 × 1,604.42
4. Step 4: Simplify right side
   2,489.34x = 5,510,540.93
5. Step 5: Solve for x
   x = 5,510,540.93/2,489.34
6. Step 6: Final answer
   x = 2,213.66