Finding the Fourth Proportional to 1,939.77, 2,676.78 and 1,100.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939.77 : 2,676.78 = 1,100.43 : x
2. Step 2: Convert to fraction form
   1,939.77/2,676.78 = 1,100.43/x
3. Step 3: Cross multiply
   1,939.77x = 2,676.78 × 1,100.43
4. Step 4: Simplify right side
   1,939.77x = 2,945,609.02
5. Step 5: Solve for x
   x = 2,945,609.02/1,939.77
6. Step 6: Final answer
   x = 1,518.54