Finding the Fourth Proportional to 1,399.96, 1,930.56 and 1,104.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399.96 : 1,930.56 = 1,104.64 : x
2. Step 2: Convert to fraction form
   1,399.96/1,930.56 = 1,104.64/x
3. Step 3: Cross multiply
   1,399.96x = 1,930.56 × 1,104.64
4. Step 4: Simplify right side
   1,399.96x = 2,132,573.80
5. Step 5: Solve for x
   x = 2,132,573.80/1,399.96
6. Step 6: Final answer
   x = 1,523.31