Finding the Fourth Proportional to 2,189.46, 3,284.16 and 1,018.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.46 : 3,284.16 = 1,018.81 : x
2. Step 2: Convert to fraction form
   2,189.46/3,284.16 = 1,018.81/x
3. Step 3: Cross multiply
   2,189.46x = 3,284.16 × 1,018.81
4. Step 4: Simplify right side
   2,189.46x = 3,345,921.75
5. Step 5: Solve for x
   x = 3,345,921.75/2,189.46
6. Step 6: Final answer
   x = 1,528.19