Finding the Fourth Proportional to 2,688.72, 3,710.34 and 1,569.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688.72 : 3,710.34 = 1,569.69 : x
2. Step 2: Convert to fraction form
   2,688.72/3,710.34 = 1,569.69/x
3. Step 3: Cross multiply
   2,688.72x = 3,710.34 × 1,569.69
4. Step 4: Simplify right side
   2,688.72x = 5,824,083.59
5. Step 5: Solve for x
   x = 5,824,083.59/2,688.72
6. Step 6: Final answer
   x = 2,166.12