Finding the Fourth Proportional to 2,635.38, 3,637.17 and 1,640.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.38 : 3,637.17 = 1,640.70 : x
2. Step 2: Convert to fraction form
   2,635.38/3,637.17 = 1,640.70/x
3. Step 3: Cross multiply
   2,635.38x = 3,637.17 × 1,640.70
4. Step 4: Simplify right side
   2,635.38x = 5,967,504.82
5. Step 5: Solve for x
   x = 5,967,504.82/2,635.38
6. Step 6: Final answer
   x = 2,264.38