Finding the Fourth Proportional to 2,162.85, 3,242.88 and 1,188.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.85 : 3,242.88 = 1,188.69 : x
2. Step 2: Convert to fraction form
   2,162.85/3,242.88 = 1,188.69/x
3. Step 3: Cross multiply
   2,162.85x = 3,242.88 × 1,188.69
4. Step 4: Simplify right side
   2,162.85x = 3,854,779.03
5. Step 5: Solve for x
   x = 3,854,779.03/2,162.85
6. Step 6: Final answer
   x = 1,782.27