Finding the Fourth Proportional to 2,845.50, 3,928.42 and 1,902.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,845.50 : 3,928.42 = 1,902.89 : x
2. Step 2: Convert to fraction form
   2,845.50/3,928.42 = 1,902.89/x
3. Step 3: Cross multiply
   2,845.50x = 3,928.42 × 1,902.89
4. Step 4: Simplify right side
   2,845.50x = 7,475,363.33
5. Step 5: Solve for x
   x = 7,475,363.33/2,845.50
6. Step 6: Final answer
   x = 2,627.09