Finding the Fourth Proportional to 2,132.36, 2,942.57 and 1,188.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.36 : 2,942.57 = 1,188.10 : x
2. Step 2: Convert to fraction form
   2,132.36/2,942.57 = 1,188.10/x
3. Step 3: Cross multiply
   2,132.36x = 2,942.57 × 1,188.10
4. Step 4: Simplify right side
   2,132.36x = 3,496,061.48
5. Step 5: Solve for x
   x = 3,496,061.48/2,132.36
6. Step 6: Final answer
   x = 1,639.53