Finding the Fourth Proportional to 1,939.49, 2,676.52 and 1,055.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939.49 : 2,676.52 = 1,055.29 : x
2. Step 2: Convert to fraction form
   1,939.49/2,676.52 = 1,055.29/x
3. Step 3: Cross multiply
   1,939.49x = 2,676.52 × 1,055.29
4. Step 4: Simplify right side
   1,939.49x = 2,824,495.46
5. Step 5: Solve for x
   x = 2,824,495.46/1,939.49
6. Step 6: Final answer
   x = 1,456.31