Finding the Fourth Proportional to 2,162.30, 3,235.21 and 1,189.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.30 : 3,235.21 = 1,189.09 : x
2. Step 2: Convert to fraction form
   2,162.30/3,235.21 = 1,189.09/x
3. Step 3: Cross multiply
   2,162.30x = 3,235.21 × 1,189.09
4. Step 4: Simplify right side
   2,162.30x = 3,846,955.86
5. Step 5: Solve for x
   x = 3,846,955.86/2,162.30
6. Step 6: Final answer
   x = 1,779.10