Finding the Fourth Proportional to 2,637.50, 3,640.39 and 1,643.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.50 : 3,640.39 = 1,643.93 : x
2. Step 2: Convert to fraction form
   2,637.50/3,640.39 = 1,643.93/x
3. Step 3: Cross multiply
   2,637.50x = 3,640.39 × 1,643.93
4. Step 4: Simplify right side
   2,637.50x = 5,984,546.33
5. Step 5: Solve for x
   x = 5,984,546.33/2,637.50
6. Step 6: Final answer
   x = 2,269.02