Finding the Fourth Proportional to 2,636.14, 3,639.04 and 1,574.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.14 : 3,639.04 = 1,574.28 : x
2. Step 2: Convert to fraction form
   2,636.14/3,639.04 = 1,574.28/x
3. Step 3: Cross multiply
   2,636.14x = 3,639.04 × 1,574.28
4. Step 4: Simplify right side
   2,636.14x = 5,728,867.89
5. Step 5: Solve for x
   x = 5,728,867.89/2,636.14
6. Step 6: Final answer
   x = 2,173.20