Finding the Fourth Proportional to 1,147.42, 1,583.55 and 960.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.42 : 1,583.55 = 960.58 : x
2. Step 2: Convert to fraction form
   1,147.42/1,583.55 = 960.58/x
3. Step 3: Cross multiply
   1,147.42x = 1,583.55 × 960.58
4. Step 4: Simplify right side
   1,147.42x = 1,521,126.46
5. Step 5: Solve for x
   x = 1,521,126.46/1,147.42
6. Step 6: Final answer
   x = 1,325.69