Finding the Fourth Proportional to 1,297.72, 1,790.54 and 738.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297.72 : 1,790.54 = 738.06 : x
2. Step 2: Convert to fraction form
   1,297.72/1,790.54 = 738.06/x
3. Step 3: Cross multiply
   1,297.72x = 1,790.54 × 738.06
4. Step 4: Simplify right side
   1,297.72x = 1,321,525.95
5. Step 5: Solve for x
   x = 1,321,525.95/1,297.72
6. Step 6: Final answer
   x = 1,018.34