Finding the Fourth Proportional to 1,159.57, 1,738.27 and 574.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,159.57 : 1,738.27 = 574.21 : x
2. Step 2: Convert to fraction form
   1,159.57/1,738.27 = 574.21/x
3. Step 3: Cross multiply
   1,159.57x = 1,738.27 × 574.21
4. Step 4: Simplify right side
   1,159.57x = 998,132.02
5. Step 5: Solve for x
   x = 998,132.02/1,159.57
6. Step 6: Final answer
   x = 860.78