Finding the Fourth Proportional to 1,447.98, 2,168.72 and 1,122.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.98 : 2,168.72 = 1,122.36 : x
2. Step 2: Convert to fraction form
   1,447.98/2,168.72 = 1,122.36/x
3. Step 3: Cross multiply
   1,447.98x = 2,168.72 × 1,122.36
4. Step 4: Simplify right side
   1,447.98x = 2,434,084.58
5. Step 5: Solve for x
   x = 2,434,084.58/1,447.98
6. Step 6: Final answer
   x = 1,681.02