Finding the Fourth Proportional to 2,636.38, 3,955.98 and 1,711.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.38 : 3,955.98 = 1,711.72 : x
2. Step 2: Convert to fraction form
   2,636.38/3,955.98 = 1,711.72/x
3. Step 3: Cross multiply
   2,636.38x = 3,955.98 × 1,711.72
4. Step 4: Simplify right side
   2,636.38x = 6,771,530.09
5. Step 5: Solve for x
   x = 6,771,530.09/2,636.38
6. Step 6: Final answer
   x = 2,568.50