Finding the Fourth Proportional to 1,092.33, 1,638.43 and 727.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.33 : 1,638.43 = 727.34 : x
2. Step 2: Convert to fraction form
   1,092.33/1,638.43 = 727.34/x
3. Step 3: Cross multiply
   1,092.33x = 1,638.43 × 727.34
4. Step 4: Simplify right side
   1,092.33x = 1,191,685.67
5. Step 5: Solve for x
   x = 1,191,685.67/1,092.33
6. Step 6: Final answer
   x = 1,090.96