Finding the Fourth Proportional to 2,132.15, 2,942.33 and 1,188

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.15 : 2,942.33 = 1,188 : x
2. Step 2: Convert to fraction form
   2,132.15/2,942.33 = 1,188/x
3. Step 3: Cross multiply
   2,132.15x = 2,942.33 × 1,188
4. Step 4: Simplify right side
   2,132.15x = 3,495,482.10
5. Step 5: Solve for x
   x = 3,495,482.10/2,132.15
6. Step 6: Final answer
   x = 1,639.42