Finding the Fourth Proportional to 1,132.72, 1,697.16 and 548.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.72 : 1,697.16 = 548.00 : x
2. Step 2: Convert to fraction form
   1,132.72/1,697.16 = 548.00/x
3. Step 3: Cross multiply
   1,132.72x = 1,697.16 × 548.00
4. Step 4: Simplify right side
   1,132.72x = 930,046.34
5. Step 5: Solve for x
   x = 930,046.34/1,132.72
6. Step 6: Final answer
   x = 821.07