Finding the Fourth Proportional to 1,258.15, 1,736.27 and 760.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.15 : 1,736.27 = 760.72 : x
2. Step 2: Convert to fraction form
   1,258.15/1,736.27 = 760.72/x
3. Step 3: Cross multiply
   1,258.15x = 1,736.27 × 760.72
4. Step 4: Simplify right side
   1,258.15x = 1,320,815.31
5. Step 5: Solve for x
   x = 1,320,815.31/1,258.15
6. Step 6: Final answer
   x = 1,049.81