Finding the Fourth Proportional to 2,018.40, 3,005.27 and 1,898.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.40 : 3,005.27 = 1,898.16 : x
2. Step 2: Convert to fraction form
   2,018.40/3,005.27 = 1,898.16/x
3. Step 3: Cross multiply
   2,018.40x = 3,005.27 × 1,898.16
4. Step 4: Simplify right side
   2,018.40x = 5,704,473.81
5. Step 5: Solve for x
   x = 5,704,473.81/2,018.40
6. Step 6: Final answer
   x = 2,826.24