Finding the Fourth Proportional to 3,618.27, 5,428.22 and 1,429.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,618.27 : 5,428.22 = 1,429.25 : x
2. Step 2: Convert to fraction form
   3,618.27/5,428.22 = 1,429.25/x
3. Step 3: Cross multiply
   3,618.27x = 5,428.22 × 1,429.25
4. Step 4: Simplify right side
   3,618.27x = 7,758,249.15
5. Step 5: Solve for x
   x = 7,758,249.15/3,618.27
6. Step 6: Final answer
   x = 2,144.19