Finding the Fourth Proportional to 2,132.16, 2,942.28 and 1,200.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.16 : 2,942.28 = 1,200.48 : x
2. Step 2: Convert to fraction form
   2,132.16/2,942.28 = 1,200.48/x
3. Step 3: Cross multiply
   2,132.16x = 2,942.28 × 1,200.48
4. Step 4: Simplify right side
   2,132.16x = 3,532,148.29
5. Step 5: Solve for x
   x = 3,532,148.29/2,132.16
6. Step 6: Final answer
   x = 1,656.61