Finding the Fourth Proportional to 2,788.09, 4,180.70 and 1,227.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.09 : 4,180.70 = 1,227.42 : x
2. Step 2: Convert to fraction form
   2,788.09/4,180.70 = 1,227.42/x
3. Step 3: Cross multiply
   2,788.09x = 4,180.70 × 1,227.42
4. Step 4: Simplify right side
   2,788.09x = 5,131,477.86
5. Step 5: Solve for x
   x = 5,131,477.86/2,788.09
6. Step 6: Final answer
   x = 1,840.50