Finding the Fourth Proportional to 801.50, 1,105.56 and 552.69

Step by Step Solution

1. Step 1: Write the proportion equation
   801.50 : 1,105.56 = 552.69 : x
2. Step 2: Convert to fraction form
   801.50/1,105.56 = 552.69/x
3. Step 3: Cross multiply
   801.50x = 1,105.56 × 552.69
4. Step 4: Simplify right side
   801.50x = 611,031.96
5. Step 5: Solve for x
   x = 611,031.96/801.50
6. Step 6: Final answer
   x = 762.37