Finding the Fourth Proportional to 1,017.81, 1,404.56 and 575.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.81 : 1,404.56 = 575.70 : x
2. Step 2: Convert to fraction form
   1,017.81/1,404.56 = 575.70/x
3. Step 3: Cross multiply
   1,017.81x = 1,404.56 × 575.70
4. Step 4: Simplify right side
   1,017.81x = 808,610.14
5. Step 5: Solve for x
   x = 808,610.14/1,017.81
6. Step 6: Final answer
   x = 794.46