Finding the Fourth Proportional to 2,687.82, 3,709.20 and 1,569.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,687.82 : 3,709.20 = 1,569.52 : x
2. Step 2: Convert to fraction form
   2,687.82/3,709.20 = 1,569.52/x
3. Step 3: Cross multiply
   2,687.82x = 3,709.20 × 1,569.52
4. Step 4: Simplify right side
   2,687.82x = 5,821,663.58
5. Step 5: Solve for x
   x = 5,821,663.58/2,687.82
6. Step 6: Final answer
   x = 2,165.94