Finding the Fourth Proportional to 1,258.55, 1,736.93 and 959.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.55 : 1,736.93 = 959.25 : x
2. Step 2: Convert to fraction form
   1,258.55/1,736.93 = 959.25/x
3. Step 3: Cross multiply
   1,258.55x = 1,736.93 × 959.25
4. Step 4: Simplify right side
   1,258.55x = 1,666,150.10
5. Step 5: Solve for x
   x = 1,666,150.10/1,258.55
6. Step 6: Final answer
   x = 1,323.86