Finding the Fourth Proportional to 2,290.15, 3,447.61 and 2,086.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.15 : 3,447.61 = 2,086.03 : x
2. Step 2: Convert to fraction form
   2,290.15/3,447.61 = 2,086.03/x
3. Step 3: Cross multiply
   2,290.15x = 3,447.61 × 2,086.03
4. Step 4: Simplify right side
   2,290.15x = 7,191,817.89
5. Step 5: Solve for x
   x = 7,191,817.89/2,290.15
6. Step 6: Final answer
   x = 3,140.33