Finding the Fourth Proportional to 2,756.86, 4,128.60 and 1,296.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,756.86 : 4,128.60 = 1,296.42 : x
2. Step 2: Convert to fraction form
   2,756.86/4,128.60 = 1,296.42/x
3. Step 3: Cross multiply
   2,756.86x = 4,128.60 × 1,296.42
4. Step 4: Simplify right side
   2,756.86x = 5,352,399.61
5. Step 5: Solve for x
   x = 5,352,399.61/2,756.86
6. Step 6: Final answer
   x = 1,941.48