Finding the Fourth Proportional to 2,132.30, 2,942.42 and 1,187.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.30 : 2,942.42 = 1,187.84 : x
2. Step 2: Convert to fraction form
   2,132.30/2,942.42 = 1,187.84/x
3. Step 3: Cross multiply
   2,132.30x = 2,942.42 × 1,187.84
4. Step 4: Simplify right side
   2,132.30x = 3,495,103.52
5. Step 5: Solve for x
   x = 3,495,103.52/2,132.30
6. Step 6: Final answer
   x = 1,639.13