Finding the Fourth Proportional to 2,839.52, 4,258.92 and 891.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.52 : 4,258.92 = 891.56 : x
2. Step 2: Convert to fraction form
   2,839.52/4,258.92 = 891.56/x
3. Step 3: Cross multiply
   2,839.52x = 4,258.92 × 891.56
4. Step 4: Simplify right side
   2,839.52x = 3,797,082.72
5. Step 5: Solve for x
   x = 3,797,082.72/2,839.52
6. Step 6: Final answer
   x = 1,337.23