Finding the Fourth Proportional to 1,939.32, 2,676.23 and 1,055.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939.32 : 2,676.23 = 1,055.12 : x
2. Step 2: Convert to fraction form
   1,939.32/2,676.23 = 1,055.12/x
3. Step 3: Cross multiply
   1,939.32x = 2,676.23 × 1,055.12
4. Step 4: Simplify right side
   1,939.32x = 2,823,743.80
5. Step 5: Solve for x
   x = 2,823,743.80/1,939.32
6. Step 6: Final answer
   x = 1,456.05