Finding the Fourth Proportional to 2,968.76, 4,092.72 and 1,919

Step by Step Solution

1. Step 1: Write the proportion equation
   2,968.76 : 4,092.72 = 1,919 : x
2. Step 2: Convert to fraction form
   2,968.76/4,092.72 = 1,919/x
3. Step 3: Cross multiply
   2,968.76x = 4,092.72 × 1,919
4. Step 4: Simplify right side
   2,968.76x = 7,853,929.68
5. Step 5: Solve for x
   x = 7,853,929.68/2,968.76
6. Step 6: Final answer
   x = 2,645.53