Finding the Fourth Proportional to 2,290.55, 3,436.34 and 829.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.55 : 3,436.34 = 829.71 : x
2. Step 2: Convert to fraction form
   2,290.55/3,436.34 = 829.71/x
3. Step 3: Cross multiply
   2,290.55x = 3,436.34 × 829.71
4. Step 4: Simplify right side
   2,290.55x = 2,851,161.51
5. Step 5: Solve for x
   x = 2,851,161.51/2,290.55
6. Step 6: Final answer
   x = 1,244.75