Finding the Fourth Proportional to 2,748.54, 4,123.01 and 1,105.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748.54 : 4,123.01 = 1,105.09 : x
2. Step 2: Convert to fraction form
   2,748.54/4,123.01 = 1,105.09/x
3. Step 3: Cross multiply
   2,748.54x = 4,123.01 × 1,105.09
4. Step 4: Simplify right side
   2,748.54x = 4,556,297.12
5. Step 5: Solve for x
   x = 4,556,297.12/2,748.54
6. Step 6: Final answer
   x = 1,657.72