Finding the Fourth Proportional to 2,131.16, 3,196.50 and 571.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.16 : 3,196.50 = 571.29 : x
2. Step 2: Convert to fraction form
   2,131.16/3,196.50 = 571.29/x
3. Step 3: Cross multiply
   2,131.16x = 3,196.50 × 571.29
4. Step 4: Simplify right side
   2,131.16x = 1,826,128.49
5. Step 5: Solve for x
   x = 1,826,128.49/2,131.16
6. Step 6: Final answer
   x = 856.87