Finding the Fourth Proportional to 2,162.88, 3,245.67 and 1,189.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.88 : 3,245.67 = 1,189.62 : x
2. Step 2: Convert to fraction form
   2,162.88/3,245.67 = 1,189.62/x
3. Step 3: Cross multiply
   2,162.88x = 3,245.67 × 1,189.62
4. Step 4: Simplify right side
   2,162.88x = 3,861,113.95
5. Step 5: Solve for x
   x = 3,861,113.95/2,162.88
6. Step 6: Final answer
   x = 1,785.17