Finding the Fourth Proportional to 2,738.79, 4,107.10 and 889.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738.79 : 4,107.10 = 889.45 : x
2. Step 2: Convert to fraction form
   2,738.79/4,107.10 = 889.45/x
3. Step 3: Cross multiply
   2,738.79x = 4,107.10 × 889.45
4. Step 4: Simplify right side
   2,738.79x = 3,653,060.10
5. Step 5: Solve for x
   x = 3,653,060.10/2,738.79
6. Step 6: Final answer
   x = 1,333.82