Finding the Fourth Proportional to 2,768.43, 4,150.39 and 1,288.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,768.43 : 4,150.39 = 1,288.58 : x
2. Step 2: Convert to fraction form
   2,768.43/4,150.39 = 1,288.58/x
3. Step 3: Cross multiply
   2,768.43x = 4,150.39 × 1,288.58
4. Step 4: Simplify right side
   2,768.43x = 5,348,082.35
5. Step 5: Solve for x
   x = 5,348,082.35/2,768.43
6. Step 6: Final answer
   x = 1,931.81