Finding the Fourth Proportional to 2,636.17, 3,637.95 and 1,441.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.17 : 3,637.95 = 1,441.21 : x
2. Step 2: Convert to fraction form
   2,636.17/3,637.95 = 1,441.21/x
3. Step 3: Cross multiply
   2,636.17x = 3,637.95 × 1,441.21
4. Step 4: Simplify right side
   2,636.17x = 5,243,049.92
5. Step 5: Solve for x
   x = 5,243,049.92/2,636.17
6. Step 6: Final answer
   x = 1,988.89