Finding the Fourth Proportional to 1,939.55, 2,676.60 and 1,055.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939.55 : 2,676.60 = 1,055.36 : x
2. Step 2: Convert to fraction form
   1,939.55/2,676.60 = 1,055.36/x
3. Step 3: Cross multiply
   1,939.55x = 2,676.60 × 1,055.36
4. Step 4: Simplify right side
   1,939.55x = 2,824,783.27
5. Step 5: Solve for x
   x = 2,824,783.27/1,939.55
6. Step 6: Final answer
   x = 1,456.42