Finding the Fourth Proportional to 2,636.76, 3,638.59 and 1,457.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.76 : 3,638.59 = 1,457.80 : x
2. Step 2: Convert to fraction form
   2,636.76/3,638.59 = 1,457.80/x
3. Step 3: Cross multiply
   2,636.76x = 3,638.59 × 1,457.80
4. Step 4: Simplify right side
   2,636.76x = 5,304,336.50
5. Step 5: Solve for x
   x = 5,304,336.50/2,636.76
6. Step 6: Final answer
   x = 2,011.69