Finding the Fourth Proportional to 2,637.81, 3,640.18 and 1,518.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.81 : 3,640.18 = 1,518.72 : x
2. Step 2: Convert to fraction form
   2,637.81/3,640.18 = 1,518.72/x
3. Step 3: Cross multiply
   2,637.81x = 3,640.18 × 1,518.72
4. Step 4: Simplify right side
   2,637.81x = 5,528,414.17
5. Step 5: Solve for x
   x = 5,528,414.17/2,637.81
6. Step 6: Final answer
   x = 2,095.83