Finding the Fourth Proportional to 2,406.69, 3,609.72 and 763.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.69 : 3,609.72 = 763.38 : x
2. Step 2: Convert to fraction form
   2,406.69/3,609.72 = 763.38/x
3. Step 3: Cross multiply
   2,406.69x = 3,609.72 × 763.38
4. Step 4: Simplify right side
   2,406.69x = 2,755,588.05
5. Step 5: Solve for x
   x = 2,755,588.05/2,406.69
6. Step 6: Final answer
   x = 1,144.97