Finding the Fourth Proportional to 1,141.56, 1,575.45 and 954.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.56 : 1,575.45 = 954.72 : x
2. Step 2: Convert to fraction form
   1,141.56/1,575.45 = 954.72/x
3. Step 3: Cross multiply
   1,141.56x = 1,575.45 × 954.72
4. Step 4: Simplify right side
   1,141.56x = 1,504,113.62
5. Step 5: Solve for x
   x = 1,504,113.62/1,141.56
6. Step 6: Final answer
   x = 1,317.59