Finding the Fourth Proportional to 3,618.54, 5,424.12 and 1,426.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,618.54 : 5,424.12 = 1,426.05 : x
2. Step 2: Convert to fraction form
   3,618.54/5,424.12 = 1,426.05/x
3. Step 3: Cross multiply
   3,618.54x = 5,424.12 × 1,426.05
4. Step 4: Simplify right side
   3,618.54x = 7,735,066.33
5. Step 5: Solve for x
   x = 7,735,066.33/3,618.54
6. Step 6: Final answer
   x = 2,137.62