Finding the Fourth Proportional to 2,688.89, 3,710.27 and 1,509.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688.89 : 3,710.27 = 1,509.74 : x
2. Step 2: Convert to fraction form
   2,688.89/3,710.27 = 1,509.74/x
3. Step 3: Cross multiply
   2,688.89x = 3,710.27 × 1,509.74
4. Step 4: Simplify right side
   2,688.89x = 5,601,528.25
5. Step 5: Solve for x
   x = 5,601,528.25/2,688.89
6. Step 6: Final answer
   x = 2,083.21