Finding the Fourth Proportional to 3,870.39, 5,805.72 and 2,226.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.39 : 5,805.72 = 2,226.18 : x
2. Step 2: Convert to fraction form
   3,870.39/5,805.72 = 2,226.18/x
3. Step 3: Cross multiply
   3,870.39x = 5,805.72 × 2,226.18
4. Step 4: Simplify right side
   3,870.39x = 12,924,577.75
5. Step 5: Solve for x
   x = 12,924,577.75/3,870.39
6. Step 6: Final answer
   x = 3,339.35