Finding the Fourth Proportional to 2,132.56, 2,942.76 and 1,188.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.56 : 2,942.76 = 1,188.24 : x
2. Step 2: Convert to fraction form
   2,132.56/2,942.76 = 1,188.24/x
3. Step 3: Cross multiply
   2,132.56x = 2,942.76 × 1,188.24
4. Step 4: Simplify right side
   2,132.56x = 3,496,705.14
5. Step 5: Solve for x
   x = 3,496,705.14/2,132.56
6. Step 6: Final answer
   x = 1,639.67