Finding the Fourth Proportional to 957.83, 1,321.89 and 584.72

Step by Step Solution

1. Step 1: Write the proportion equation
   957.83 : 1,321.89 = 584.72 : x
2. Step 2: Convert to fraction form
   957.83/1,321.89 = 584.72/x
3. Step 3: Cross multiply
   957.83x = 1,321.89 × 584.72
4. Step 4: Simplify right side
   957.83x = 772,936.61
5. Step 5: Solve for x
   x = 772,936.61/957.83
6. Step 6: Final answer
   x = 806.97