Finding the Fourth Proportional to 2,922.57, 4,380.09 and 1,071.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,922.57 : 4,380.09 = 1,071.48 : x
2. Step 2: Convert to fraction form
   2,922.57/4,380.09 = 1,071.48/x
3. Step 3: Cross multiply
   2,922.57x = 4,380.09 × 1,071.48
4. Step 4: Simplify right side
   2,922.57x = 4,693,178.83
5. Step 5: Solve for x
   x = 4,693,178.83/2,922.57
6. Step 6: Final answer
   x = 1,605.84