Finding the Fourth Proportional to 1,940.78, 2,910.54 and 844.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.78 : 2,910.54 = 844.82 : x
2. Step 2: Convert to fraction form
   1,940.78/2,910.54 = 844.82/x
3. Step 3: Cross multiply
   1,940.78x = 2,910.54 × 844.82
4. Step 4: Simplify right side
   1,940.78x = 2,458,882.40
5. Step 5: Solve for x
   x = 2,458,882.40/1,940.78
6. Step 6: Final answer
   x = 1,266.96