Finding the Fourth Proportional to 2,855.45, 3,938.89 and 1,792.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,855.45 : 3,938.89 = 1,792.80 : x
2. Step 2: Convert to fraction form
   2,855.45/3,938.89 = 1,792.80/x
3. Step 3: Cross multiply
   2,855.45x = 3,938.89 × 1,792.80
4. Step 4: Simplify right side
   2,855.45x = 7,061,641.99
5. Step 5: Solve for x
   x = 7,061,641.99/2,855.45
6. Step 6: Final answer
   x = 2,473.04