Finding the Fourth Proportional to 1,399.14, 2,096.28 and 1,053.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399.14 : 2,096.28 = 1,053.54 : x
2. Step 2: Convert to fraction form
   1,399.14/2,096.28 = 1,053.54/x
3. Step 3: Cross multiply
   1,399.14x = 2,096.28 × 1,053.54
4. Step 4: Simplify right side
   1,399.14x = 2,208,514.83
5. Step 5: Solve for x
   x = 2,208,514.83/1,399.14
6. Step 6: Final answer
   x = 1,578.48