Finding the Fourth Proportional to 2,851.96, 4,273.86 and 1,288.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.96 : 4,273.86 = 1,288.08 : x
2. Step 2: Convert to fraction form
   2,851.96/4,273.86 = 1,288.08/x
3. Step 3: Cross multiply
   2,851.96x = 4,273.86 × 1,288.08
4. Step 4: Simplify right side
   2,851.96x = 5,505,073.59
5. Step 5: Solve for x
   x = 5,505,073.59/2,851.96
6. Step 6: Final answer
   x = 1,930.28