Finding the Fourth Proportional to 2,637.89, 3,639.57 and 1,518.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.89 : 3,639.57 = 1,518.87 : x
2. Step 2: Convert to fraction form
   2,637.89/3,639.57 = 1,518.87/x
3. Step 3: Cross multiply
   2,637.89x = 3,639.57 × 1,518.87
4. Step 4: Simplify right side
   2,637.89x = 5,528,033.69
5. Step 5: Solve for x
   x = 5,528,033.69/2,637.89
6. Step 6: Final answer
   x = 2,095.63