Finding the Fourth Proportional to 2,384.42, 3,290.64 and 1,336.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,384.42 : 3,290.64 = 1,336.64 : x
2. Step 2: Convert to fraction form
   2,384.42/3,290.64 = 1,336.64/x
3. Step 3: Cross multiply
   2,384.42x = 3,290.64 × 1,336.64
4. Step 4: Simplify right side
   2,384.42x = 4,398,401.05
5. Step 5: Solve for x
   x = 4,398,401.05/2,384.42
6. Step 6: Final answer
   x = 1,844.64