Finding the Fourth Proportional to 2,748.87, 4,100.76 and 2,673.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748.87 : 4,100.76 = 2,673.57 : x
2. Step 2: Convert to fraction form
   2,748.87/4,100.76 = 2,673.57/x
3. Step 3: Cross multiply
   2,748.87x = 4,100.76 × 2,673.57
4. Step 4: Simplify right side
   2,748.87x = 10,963,684.29
5. Step 5: Solve for x
   x = 10,963,684.29/2,748.87
6. Step 6: Final answer
   x = 3,988.43