Finding the Fourth Proportional to 2,302.50, 3,178.56 and 2,220.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,302.50 : 3,178.56 = 2,220.42 : x
2. Step 2: Convert to fraction form
   2,302.50/3,178.56 = 2,220.42/x
3. Step 3: Cross multiply
   2,302.50x = 3,178.56 × 2,220.42
4. Step 4: Simplify right side
   2,302.50x = 7,057,738.20
5. Step 5: Solve for x
   x = 7,057,738.20/2,302.50
6. Step 6: Final answer
   x = 3,065.25