Finding the Fourth Proportional to 2,405.69, 3,609.14 and 674.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.69 : 3,609.14 = 674.31 : x
2. Step 2: Convert to fraction form
   2,405.69/3,609.14 = 674.31/x
3. Step 3: Cross multiply
   2,405.69x = 3,609.14 × 674.31
4. Step 4: Simplify right side
   2,405.69x = 2,433,679.19
5. Step 5: Solve for x
   x = 2,433,679.19/2,405.69
6. Step 6: Final answer
   x = 1,011.63