Finding the Fourth Proportional to 2,613.60, 3,606.69 and 1,434.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.60 : 3,606.69 = 1,434.63 : x
2. Step 2: Convert to fraction form
   2,613.60/3,606.69 = 1,434.63/x
3. Step 3: Cross multiply
   2,613.60x = 3,606.69 × 1,434.63
4. Step 4: Simplify right side
   2,613.60x = 5,174,265.67
5. Step 5: Solve for x
   x = 5,174,265.67/2,613.60
6. Step 6: Final answer
   x = 1,979.75