Finding the Fourth Proportional to 1,146.79, 1,582.58 and 622.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.79 : 1,582.58 = 622.82 : x
2. Step 2: Convert to fraction form
   1,146.79/1,582.58 = 622.82/x
3. Step 3: Cross multiply
   1,146.79x = 1,582.58 × 622.82
4. Step 4: Simplify right side
   1,146.79x = 985,662.48
5. Step 5: Solve for x
   x = 985,662.48/1,146.79
6. Step 6: Final answer
   x = 859.50