Finding the Fourth Proportional to 2,162.16, 3,243.24 and 1,188

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.16 : 3,243.24 = 1,188 : x
2. Step 2: Convert to fraction form
   2,162.16/3,243.24 = 1,188/x
3. Step 3: Cross multiply
   2,162.16x = 3,243.24 × 1,188
4. Step 4: Simplify right side
   2,162.16x = 3,852,969.12
5. Step 5: Solve for x
   x = 3,852,969.12/2,162.16
6. Step 6: Final answer
   x = 1,782