Finding the Fourth Proportional to 2,290.77, 3,436.61 and 829.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.77 : 3,436.61 = 829.88 : x
2. Step 2: Convert to fraction form
   2,290.77/3,436.61 = 829.88/x
3. Step 3: Cross multiply
   2,290.77x = 3,436.61 × 829.88
4. Step 4: Simplify right side
   2,290.77x = 2,851,952.57
5. Step 5: Solve for x
   x = 2,851,952.57/2,290.77
6. Step 6: Final answer
   x = 1,244.98