Finding the Fourth Proportional to 1,243.36, 1,715.49 and 801.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.36 : 1,715.49 = 801.52 : x
2. Step 2: Convert to fraction form
   1,243.36/1,715.49 = 801.52/x
3. Step 3: Cross multiply
   1,243.36x = 1,715.49 × 801.52
4. Step 4: Simplify right side
   1,243.36x = 1,375,001.69
5. Step 5: Solve for x
   x = 1,375,001.69/1,243.36
6. Step 6: Final answer
   x = 1,105.87