Finding the Fourth Proportional to 2,636.38, 3,636.31 and 1,628.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.38 : 3,636.31 = 1,628.06 : x
2. Step 2: Convert to fraction form
   2,636.38/3,636.31 = 1,628.06/x
3. Step 3: Cross multiply
   2,636.38x = 3,636.31 × 1,628.06
4. Step 4: Simplify right side
   2,636.38x = 5,920,126.79
5. Step 5: Solve for x
   x = 5,920,126.79/2,636.38
6. Step 6: Final answer
   x = 2,245.56