Finding the Fourth Proportional to 2,162.61, 3,243.93 and 1,188.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.61 : 3,243.93 = 1,188.18 : x
2. Step 2: Convert to fraction form
   2,162.61/3,243.93 = 1,188.18/x
3. Step 3: Cross multiply
   2,162.61x = 3,243.93 × 1,188.18
4. Step 4: Simplify right side
   2,162.61x = 3,854,372.75
5. Step 5: Solve for x
   x = 3,854,372.75/2,162.61
6. Step 6: Final answer
   x = 1,782.28