Finding the Fourth Proportional to 2,983.30, 4,118.82 and 1,921.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,983.30 : 4,118.82 = 1,921.54 : x
2. Step 2: Convert to fraction form
   2,983.30/4,118.82 = 1,921.54/x
3. Step 3: Cross multiply
   2,983.30x = 4,118.82 × 1,921.54
4. Step 4: Simplify right side
   2,983.30x = 7,914,477.38
5. Step 5: Solve for x
   x = 7,914,477.38/2,983.30
6. Step 6: Final answer
   x = 2,652.93