Finding the Fourth Proportional to 2,018.91, 3,031.07 and 1,953.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.91 : 3,031.07 = 1,953.30 : x
2. Step 2: Convert to fraction form
   2,018.91/3,031.07 = 1,953.30/x
3. Step 3: Cross multiply
   2,018.91x = 3,031.07 × 1,953.30
4. Step 4: Simplify right side
   2,018.91x = 5,920,579.26
5. Step 5: Solve for x
   x = 5,920,579.26/2,018.91
6. Step 6: Final answer
   x = 2,932.56