Finding the Fourth Proportional to 3,084.78, 4,258.86 and 2,420.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,084.78 : 4,258.86 = 2,420.04 : x
2. Step 2: Convert to fraction form
   3,084.78/4,258.86 = 2,420.04/x
3. Step 3: Cross multiply
   3,084.78x = 4,258.86 × 2,420.04
4. Step 4: Simplify right side
   3,084.78x = 10,306,611.55
5. Step 5: Solve for x
   x = 10,306,611.55/3,084.78
6. Step 6: Final answer
   x = 3,341.12