Finding the Fourth Proportional to 1,794.78, 2,690.25 and 1,280.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,794.78 : 2,690.25 = 1,280.22 : x
2. Step 2: Convert to fraction form
   1,794.78/2,690.25 = 1,280.22/x
3. Step 3: Cross multiply
   1,794.78x = 2,690.25 × 1,280.22
4. Step 4: Simplify right side
   1,794.78x = 3,444,111.86
5. Step 5: Solve for x
   x = 3,444,111.86/1,794.78
6. Step 6: Final answer
   x = 1,918.96