Finding the Fourth Proportional to 2,688.16, 3,709.91 and 1,568.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688.16 : 3,709.91 = 1,568.89 : x
2. Step 2: Convert to fraction form
   2,688.16/3,709.91 = 1,568.89/x
3. Step 3: Cross multiply
   2,688.16x = 3,709.91 × 1,568.89
4. Step 4: Simplify right side
   2,688.16x = 5,820,440.70
5. Step 5: Solve for x
   x = 5,820,440.70/2,688.16
6. Step 6: Final answer
   x = 2,165.21