Finding the Fourth Proportional to 1,017.56, 1,404.24 and 575.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.56 : 1,404.24 = 575.45 : x
2. Step 2: Convert to fraction form
   1,017.56/1,404.24 = 575.45/x
3. Step 3: Cross multiply
   1,017.56x = 1,404.24 × 575.45
4. Step 4: Simplify right side
   1,017.56x = 808,073.89
5. Step 5: Solve for x
   x = 808,073.89/1,017.56
6. Step 6: Final answer
   x = 794.13