Finding the Fourth Proportional to 3,414.78, 5,123.10 and 1,106.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,414.78 : 5,123.10 = 1,106.28 : x
2. Step 2: Convert to fraction form
   3,414.78/5,123.10 = 1,106.28/x
3. Step 3: Cross multiply
   3,414.78x = 5,123.10 × 1,106.28
4. Step 4: Simplify right side
   3,414.78x = 5,667,583.07
5. Step 5: Solve for x
   x = 5,667,583.07/3,414.78
6. Step 6: Final answer
   x = 1,659.72