Finding the Fourth Proportional to 2,636.71, 3,638.73 and 1,457.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.71 : 3,638.73 = 1,457.85 : x
2. Step 2: Convert to fraction form
   2,636.71/3,638.73 = 1,457.85/x
3. Step 3: Cross multiply
   2,636.71x = 3,638.73 × 1,457.85
4. Step 4: Simplify right side
   2,636.71x = 5,304,715.24
5. Step 5: Solve for x
   x = 5,304,715.24/2,636.71
6. Step 6: Final answer
   x = 2,011.87