Finding the Fourth Proportional to 1,983.30, 2,974.31 and 1,853.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.30 : 2,974.31 = 1,853.88 : x
2. Step 2: Convert to fraction form
   1,983.30/2,974.31 = 1,853.88/x
3. Step 3: Cross multiply
   1,983.30x = 2,974.31 × 1,853.88
4. Step 4: Simplify right side
   1,983.30x = 5,514,013.82
5. Step 5: Solve for x
   x = 5,514,013.82/1,983.30
6. Step 6: Final answer
   x = 2,780.22