Finding the Fourth Proportional to 1,064.72, 1,596.60 and 571.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.72 : 1,596.60 = 571.52 : x
2. Step 2: Convert to fraction form
   1,064.72/1,596.60 = 571.52/x
3. Step 3: Cross multiply
   1,064.72x = 1,596.60 × 571.52
4. Step 4: Simplify right side
   1,064.72x = 912,488.83
5. Step 5: Solve for x
   x = 912,488.83/1,064.72
6. Step 6: Final answer
   x = 857.02