Finding the Fourth Proportional to 2,631.39, 3,629.30 and 1,636.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.39 : 3,629.30 = 1,636.71 : x
2. Step 2: Convert to fraction form
   2,631.39/3,629.30 = 1,636.71/x
3. Step 3: Cross multiply
   2,631.39x = 3,629.30 × 1,636.71
4. Step 4: Simplify right side
   2,631.39x = 5,940,111.60
5. Step 5: Solve for x
   x = 5,940,111.60/2,631.39
6. Step 6: Final answer
   x = 2,257.40