Finding the Fourth Proportional to 2,613.69, 3,606.91 and 1,434.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.69 : 3,606.91 = 1,434.74 : x
2. Step 2: Convert to fraction form
   2,613.69/3,606.91 = 1,434.74/x
3. Step 3: Cross multiply
   2,613.69x = 3,606.91 × 1,434.74
4. Step 4: Simplify right side
   2,613.69x = 5,174,956.43
5. Step 5: Solve for x
   x = 5,174,956.43/2,613.69
6. Step 6: Final answer
   x = 1,979.94