Finding the Fourth Proportional to 1,017.88, 1,404.60 and 569.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.88 : 1,404.60 = 569.67 : x
2. Step 2: Convert to fraction form
   1,017.88/1,404.60 = 569.67/x
3. Step 3: Cross multiply
   1,017.88x = 1,404.60 × 569.67
4. Step 4: Simplify right side
   1,017.88x = 800,151.46
5. Step 5: Solve for x
   x = 800,151.46/1,017.88
6. Step 6: Final answer
   x = 786.10