Finding the Fourth Proportional to 1,146.88, 1,582.72 and 622.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.88 : 1,582.72 = 622.94 : x
2. Step 2: Convert to fraction form
   1,146.88/1,582.72 = 622.94/x
3. Step 3: Cross multiply
   1,146.88x = 1,582.72 × 622.94
4. Step 4: Simplify right side
   1,146.88x = 985,939.60
5. Step 5: Solve for x
   x = 985,939.60/1,146.88
6. Step 6: Final answer
   x = 859.67