Finding the Fourth Proportional to 2,556.98, 3,833.94 and 913.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.98 : 3,833.94 = 913.22 : x
2. Step 2: Convert to fraction form
   2,556.98/3,833.94 = 913.22/x
3. Step 3: Cross multiply
   2,556.98x = 3,833.94 × 913.22
4. Step 4: Simplify right side
   2,556.98x = 3,501,230.69
5. Step 5: Solve for x
   x = 3,501,230.69/2,556.98
6. Step 6: Final answer
   x = 1,369.28