Finding the Fourth Proportional to 1,584.27, 2,185.79 and 954.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584.27 : 2,185.79 = 954.72 : x
2. Step 2: Convert to fraction form
   1,584.27/2,185.79 = 954.72/x
3. Step 3: Cross multiply
   1,584.27x = 2,185.79 × 954.72
4. Step 4: Simplify right side
   1,584.27x = 2,086,812.66
5. Step 5: Solve for x
   x = 2,086,812.66/1,584.27
6. Step 6: Final answer
   x = 1,317.21