Finding the Fourth Proportional to 2,132.52, 2,942.86 and 1,188.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.52 : 2,942.86 = 1,188.30 : x
2. Step 2: Convert to fraction form
   2,132.52/2,942.86 = 1,188.30/x
3. Step 3: Cross multiply
   2,132.52x = 2,942.86 × 1,188.30
4. Step 4: Simplify right side
   2,132.52x = 3,497,000.54
5. Step 5: Solve for x
   x = 3,497,000.54/2,132.52
6. Step 6: Final answer
   x = 1,639.84