Finding the Fourth Proportional to 1,964.72, 2,711.56 and 1,136.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964.72 : 2,711.56 = 1,136.72 : x
2. Step 2: Convert to fraction form
   1,964.72/2,711.56 = 1,136.72/x
3. Step 3: Cross multiply
   1,964.72x = 2,711.56 × 1,136.72
4. Step 4: Simplify right side
   1,964.72x = 3,082,284.48
5. Step 5: Solve for x
   x = 3,082,284.48/1,964.72
6. Step 6: Final answer
   x = 1,568.82