Finding the Fourth Proportional to 1,297.80, 1,790.88 and 738.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297.80 : 1,790.88 = 738.27 : x
2. Step 2: Convert to fraction form
   1,297.80/1,790.88 = 738.27/x
3. Step 3: Cross multiply
   1,297.80x = 1,790.88 × 738.27
4. Step 4: Simplify right side
   1,297.80x = 1,322,152.98
5. Step 5: Solve for x
   x = 1,322,152.98/1,297.80
6. Step 6: Final answer
   x = 1,018.76