Finding the Fourth Proportional to 1,061.70, 1,591.33 and 573.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.70 : 1,591.33 = 573.73 : x
2. Step 2: Convert to fraction form
   1,061.70/1,591.33 = 573.73/x
3. Step 3: Cross multiply
   1,061.70x = 1,591.33 × 573.73
4. Step 4: Simplify right side
   1,061.70x = 912,993.76
5. Step 5: Solve for x
   x = 912,993.76/1,061.70
6. Step 6: Final answer
   x = 859.94