Finding the Fourth Proportional to 1,061.73, 1,589.37 and 573.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.73 : 1,589.37 = 573.30 : x
2. Step 2: Convert to fraction form
   1,061.73/1,589.37 = 573.30/x
3. Step 3: Cross multiply
   1,061.73x = 1,589.37 × 573.30
4. Step 4: Simplify right side
   1,061.73x = 911,185.82
5. Step 5: Solve for x
   x = 911,185.82/1,061.73
6. Step 6: Final answer
   x = 858.21