Finding the Fourth Proportional to 1,443.84, 2,164.56 and 622.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.84 : 2,164.56 = 622.00 : x
2. Step 2: Convert to fraction form
   1,443.84/2,164.56 = 622.00/x
3. Step 3: Cross multiply
   1,443.84x = 2,164.56 × 622.00
4. Step 4: Simplify right side
   1,443.84x = 1,346,365.41
5. Step 5: Solve for x
   x = 1,346,365.41/1,443.84
6. Step 6: Final answer
   x = 932.49