Finding the Fourth Proportional to 2,554.54, 3,830.87 and 910.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,554.54 : 3,830.87 = 910.78 : x
2. Step 2: Convert to fraction form
   2,554.54/3,830.87 = 910.78/x
3. Step 3: Cross multiply
   2,554.54x = 3,830.87 × 910.78
4. Step 4: Simplify right side
   2,554.54x = 3,489,075.22
5. Step 5: Solve for x
   x = 3,489,075.22/2,554.54
6. Step 6: Final answer
   x = 1,365.83