Finding the Fourth Proportional to 2,738.06, 4,107.15 and 889.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738.06 : 4,107.15 = 889.20 : x
2. Step 2: Convert to fraction form
   2,738.06/4,107.15 = 889.20/x
3. Step 3: Cross multiply
   2,738.06x = 4,107.15 × 889.20
4. Step 4: Simplify right side
   2,738.06x = 3,652,077.78
5. Step 5: Solve for x
   x = 3,652,077.78/2,738.06
6. Step 6: Final answer
   x = 1,333.82