Finding the Fourth Proportional to 3,902.34, 5,384.82 and 2,223.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902.34 : 5,384.82 = 2,223.40 : x
2. Step 2: Convert to fraction form
   3,902.34/5,384.82 = 2,223.40/x
3. Step 3: Cross multiply
   3,902.34x = 5,384.82 × 2,223.40
4. Step 4: Simplify right side
   3,902.34x = 11,972,595.33
5. Step 5: Solve for x
   x = 11,972,595.33/3,902.34
6. Step 6: Final answer
   x = 3,068.06