Finding the Fourth Proportional to 2,921.49, 4,032.81 and 1,976.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,921.49 : 4,032.81 = 1,976.82 : x
2. Step 2: Convert to fraction form
   2,921.49/4,032.81 = 1,976.82/x
3. Step 3: Cross multiply
   2,921.49x = 4,032.81 × 1,976.82
4. Step 4: Simplify right side
   2,921.49x = 7,972,139.46
5. Step 5: Solve for x
   x = 7,972,139.46/2,921.49
6. Step 6: Final answer
   x = 2,728.79