Finding the Fourth Proportional to 1,928.89, 2,894.81 and 1,270.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928.89 : 2,894.81 = 1,270.55 : x
2. Step 2: Convert to fraction form
   1,928.89/2,894.81 = 1,270.55/x
3. Step 3: Cross multiply
   1,928.89x = 2,894.81 × 1,270.55
4. Step 4: Simplify right side
   1,928.89x = 3,677,992.20
5. Step 5: Solve for x
   x = 3,677,992.20/1,928.89
6. Step 6: Final answer
   x = 1,906.79