Finding the Fourth Proportional to 2,189.03, 3,281.72 and 1,018.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.03 : 3,281.72 = 1,018.42 : x
2. Step 2: Convert to fraction form
   2,189.03/3,281.72 = 1,018.42/x
3. Step 3: Cross multiply
   2,189.03x = 3,281.72 × 1,018.42
4. Step 4: Simplify right side
   2,189.03x = 3,342,155.99
5. Step 5: Solve for x
   x = 3,342,155.99/2,189.03
6. Step 6: Final answer
   x = 1,526.78