Finding the Fourth Proportional to 2,109.88, 3,164.82 and 570.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.88 : 3,164.82 = 570.88 : x
2. Step 2: Convert to fraction form
   2,109.88/3,164.82 = 570.88/x
3. Step 3: Cross multiply
   2,109.88x = 3,164.82 × 570.88
4. Step 4: Simplify right side
   2,109.88x = 1,806,713.76
5. Step 5: Solve for x
   x = 1,806,713.76/2,109.88
6. Step 6: Final answer
   x = 856.31