Finding the Fourth Proportional to 1,053.72, 1,452.72 and 738.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.72 : 1,452.72 = 738.56 : x
2. Step 2: Convert to fraction form
   1,053.72/1,452.72 = 738.56/x
3. Step 3: Cross multiply
   1,053.72x = 1,452.72 × 738.56
4. Step 4: Simplify right side
   1,053.72x = 1,072,920.88
5. Step 5: Solve for x
   x = 1,072,920.88/1,053.72
6. Step 6: Final answer
   x = 1,018.22