Finding the Fourth Proportional to 3,235.58, 4,459.72 and 2,290.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,235.58 : 4,459.72 = 2,290.15 : x
2. Step 2: Convert to fraction form
   3,235.58/4,459.72 = 2,290.15/x
3. Step 3: Cross multiply
   3,235.58x = 4,459.72 × 2,290.15
4. Step 4: Simplify right side
   3,235.58x = 10,213,435.89
5. Step 5: Solve for x
   x = 10,213,435.89/3,235.58
6. Step 6: Final answer
   x = 3,156.61