Finding the Fourth Proportional to 2,978.73, 4,111.83 and 1,983.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.73 : 4,111.83 = 1,983.69 : x
2. Step 2: Convert to fraction form
   2,978.73/4,111.83 = 1,983.69/x
3. Step 3: Cross multiply
   2,978.73x = 4,111.83 × 1,983.69
4. Step 4: Simplify right side
   2,978.73x = 8,156,596.05
5. Step 5: Solve for x
   x = 8,156,596.05/2,978.73
6. Step 6: Final answer
   x = 2,738.28