Finding the Fourth Proportional to 1,253.82, 1,728.72 and 958.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.82 : 1,728.72 = 958.62 : x
2. Step 2: Convert to fraction form
   1,253.82/1,728.72 = 958.62/x
3. Step 3: Cross multiply
   1,253.82x = 1,728.72 × 958.62
4. Step 4: Simplify right side
   1,253.82x = 1,657,185.57
5. Step 5: Solve for x
   x = 1,657,185.57/1,253.82
6. Step 6: Final answer
   x = 1,321.71