Finding the Fourth Proportional to 1,422.28, 1,962.56 and 792.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.28 : 1,962.56 = 792.74 : x
2. Step 2: Convert to fraction form
   1,422.28/1,962.56 = 792.74/x
3. Step 3: Cross multiply
   1,422.28x = 1,962.56 × 792.74
4. Step 4: Simplify right side
   1,422.28x = 1,555,792.32
5. Step 5: Solve for x
   x = 1,555,792.32/1,422.28
6. Step 6: Final answer
   x = 1,093.87