Finding the Fourth Proportional to 2,922.09, 4,380.40 and 1,072.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,922.09 : 4,380.40 = 1,072.71 : x
2. Step 2: Convert to fraction form
   2,922.09/4,380.40 = 1,072.71/x
3. Step 3: Cross multiply
   2,922.09x = 4,380.40 × 1,072.71
4. Step 4: Simplify right side
   2,922.09x = 4,698,898.88
5. Step 5: Solve for x
   x = 4,698,898.88/2,922.09
6. Step 6: Final answer
   x = 1,608.06