Finding the Fourth Proportional to 2,131.86, 3,197.76 and 571.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.86 : 3,197.76 = 571.82 : x
2. Step 2: Convert to fraction form
   2,131.86/3,197.76 = 571.82/x
3. Step 3: Cross multiply
   2,131.86x = 3,197.76 × 571.82
4. Step 4: Simplify right side
   2,131.86x = 1,828,543.12
5. Step 5: Solve for x
   x = 1,828,543.12/2,131.86
6. Step 6: Final answer
   x = 857.72