Finding the Fourth Proportional to 1,327.69, 1,992.18 and 548.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,327.69 : 1,992.18 = 548.29 : x
2. Step 2: Convert to fraction form
   1,327.69/1,992.18 = 548.29/x
3. Step 3: Cross multiply
   1,327.69x = 1,992.18 × 548.29
4. Step 4: Simplify right side
   1,327.69x = 1,092,292.37
5. Step 5: Solve for x
   x = 1,092,292.37/1,327.69
6. Step 6: Final answer
   x = 822.70