Finding the Fourth Proportional to 1,018.17, 1,404.84 and 575.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.17 : 1,404.84 = 575.91 : x
2. Step 2: Convert to fraction form
   1,018.17/1,404.84 = 575.91/x
3. Step 3: Cross multiply
   1,018.17x = 1,404.84 × 575.91
4. Step 4: Simplify right side
   1,018.17x = 809,063.56
5. Step 5: Solve for x
   x = 809,063.56/1,018.17
6. Step 6: Final answer
   x = 794.63