Finding the Fourth Proportional to 2,556.90, 3,833.76 and 995.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.90 : 3,833.76 = 995.58 : x
2. Step 2: Convert to fraction form
   2,556.90/3,833.76 = 995.58/x
3. Step 3: Cross multiply
   2,556.90x = 3,833.76 × 995.58
4. Step 4: Simplify right side
   2,556.90x = 3,816,814.78
5. Step 5: Solve for x
   x = 3,816,814.78/2,556.90
6. Step 6: Final answer
   x = 1,492.75