Finding the Fourth Proportional to 2,189.56, 3,285.96 and 1,036.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.56 : 3,285.96 = 1,036.12 : x
2. Step 2: Convert to fraction form
   2,189.56/3,285.96 = 1,036.12/x
3. Step 3: Cross multiply
   2,189.56x = 3,285.96 × 1,036.12
4. Step 4: Simplify right side
   2,189.56x = 3,404,648.88
5. Step 5: Solve for x
   x = 3,404,648.88/2,189.56
6. Step 6: Final answer
   x = 1,554.95