Finding the Fourth Proportional to 1,021.35, 1,408.56 and 797.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021.35 : 1,408.56 = 797.34 : x
2. Step 2: Convert to fraction form
   1,021.35/1,408.56 = 797.34/x
3. Step 3: Cross multiply
   1,021.35x = 1,408.56 × 797.34
4. Step 4: Simplify right side
   1,021.35x = 1,123,101.23
5. Step 5: Solve for x
   x = 1,123,101.23/1,021.35
6. Step 6: Final answer
   x = 1,099.62