Finding the Fourth Proportional to 2,746.54, 3,788.90 and 2,640.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,746.54 : 3,788.90 = 2,640.46 : x
2. Step 2: Convert to fraction form
   2,746.54/3,788.90 = 2,640.46/x
3. Step 3: Cross multiply
   2,746.54x = 3,788.90 × 2,640.46
4. Step 4: Simplify right side
   2,746.54x = 10,004,438.89
5. Step 5: Solve for x
   x = 10,004,438.89/2,746.54
6. Step 6: Final answer
   x = 3,642.56