Finding the Fourth Proportional to 2,618.42, 3,613.39 and 1,423.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.42 : 3,613.39 = 1,423.40 : x
2. Step 2: Convert to fraction form
   2,618.42/3,613.39 = 1,423.40/x
3. Step 3: Cross multiply
   2,618.42x = 3,613.39 × 1,423.40
4. Step 4: Simplify right side
   2,618.42x = 5,143,284.00
5. Step 5: Solve for x
   x = 5,143,284.00/2,618.42
6. Step 6: Final answer
   x = 1,964.27