Finding the Fourth Proportional to 1,447.32, 1,996.56 and 922.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.32 : 1,996.56 = 922.80 : x
2. Step 2: Convert to fraction form
   1,447.32/1,996.56 = 922.80/x
3. Step 3: Cross multiply
   1,447.32x = 1,996.56 × 922.80
4. Step 4: Simplify right side
   1,447.32x = 1,842,425.57
5. Step 5: Solve for x
   x = 1,842,425.57/1,447.32
6. Step 6: Final answer
   x = 1,272.99