Finding the Fourth Proportional to 2,130.82, 3,196.37 and 570.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130.82 : 3,196.37 = 570.79 : x
2. Step 2: Convert to fraction form
   2,130.82/3,196.37 = 570.79/x
3. Step 3: Cross multiply
   2,130.82x = 3,196.37 × 570.79
4. Step 4: Simplify right side
   2,130.82x = 1,824,456.03
5. Step 5: Solve for x
   x = 1,824,456.03/2,130.82
6. Step 6: Final answer
   x = 856.22