Finding the Fourth Proportional to 1,174.62, 1,621.91 and 727.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.62 : 1,621.91 = 727.15 : x
2. Step 2: Convert to fraction form
   1,174.62/1,621.91 = 727.15/x
3. Step 3: Cross multiply
   1,174.62x = 1,621.91 × 727.15
4. Step 4: Simplify right side
   1,174.62x = 1,179,371.86
5. Step 5: Solve for x
   x = 1,179,371.86/1,174.62
6. Step 6: Final answer
   x = 1,004.05