Finding the Fourth Proportional to 1,037.72, 1,422.76 and 1,019.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,037.72 : 1,422.76 = 1,019.27 : x
2. Step 2: Convert to fraction form
   1,037.72/1,422.76 = 1,019.27/x
3. Step 3: Cross multiply
   1,037.72x = 1,422.76 × 1,019.27
4. Step 4: Simplify right side
   1,037.72x = 1,450,176.59
5. Step 5: Solve for x
   x = 1,450,176.59/1,037.72
6. Step 6: Final answer
   x = 1,397.46