Finding the Fourth Proportional to 1,938.69, 2,675.39 and 1,054.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.69 : 2,675.39 = 1,054.50 : x
2. Step 2: Convert to fraction form
   1,938.69/2,675.39 = 1,054.50/x
3. Step 3: Cross multiply
   1,938.69x = 2,675.39 × 1,054.50
4. Step 4: Simplify right side
   1,938.69x = 2,821,183.45
5. Step 5: Solve for x
   x = 2,821,183.45/1,938.69
6. Step 6: Final answer
   x = 1,455.20