Finding the Fourth Proportional to 1,421.71, 1,962.06 and 792.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.71 : 1,962.06 = 792.28 : x
2. Step 2: Convert to fraction form
   1,421.71/1,962.06 = 792.28/x
3. Step 3: Cross multiply
   1,421.71x = 1,962.06 × 792.28
4. Step 4: Simplify right side
   1,421.71x = 1,554,500.90
5. Step 5: Solve for x
   x = 1,554,500.90/1,421.71
6. Step 6: Final answer
   x = 1,093.40