Finding the Fourth Proportional to 1,939.89, 2,676.39 and 1,100.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939.89 : 2,676.39 = 1,100.54 : x
2. Step 2: Convert to fraction form
   1,939.89/2,676.39 = 1,100.54/x
3. Step 3: Cross multiply
   1,939.89x = 2,676.39 × 1,100.54
4. Step 4: Simplify right side
   1,939.89x = 2,945,460.87
5. Step 5: Solve for x
   x = 2,945,460.87/1,939.89
6. Step 6: Final answer
   x = 1,518.36