Finding the Fourth Proportional to 1,150.98, 1,724.07 and 955.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.98 : 1,724.07 = 955.50 : x
2. Step 2: Convert to fraction form
   1,150.98/1,724.07 = 955.50/x
3. Step 3: Cross multiply
   1,150.98x = 1,724.07 × 955.50
4. Step 4: Simplify right side
   1,150.98x = 1,647,348.89
5. Step 5: Solve for x
   x = 1,647,348.89/1,150.98
6. Step 6: Final answer
   x = 1,431.26