Finding the Fourth Proportional to 1,976.42, 2,728.73 and 1,268.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.42 : 2,728.73 = 1,268.57 : x
2. Step 2: Convert to fraction form
   1,976.42/2,728.73 = 1,268.57/x
3. Step 3: Cross multiply
   1,976.42x = 2,728.73 × 1,268.57
4. Step 4: Simplify right side
   1,976.42x = 3,461,565.03
5. Step 5: Solve for x
   x = 3,461,565.03/1,976.42
6. Step 6: Final answer
   x = 1,751.44