Finding the Fourth Proportional to 2,982.76, 4,474.18 and 902.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,982.76 : 4,474.18 = 902.78 : x
2. Step 2: Convert to fraction form
   2,982.76/4,474.18 = 902.78/x
3. Step 3: Cross multiply
   2,982.76x = 4,474.18 × 902.78
4. Step 4: Simplify right side
   2,982.76x = 4,039,200.22
5. Step 5: Solve for x
   x = 4,039,200.22/2,982.76
6. Step 6: Final answer
   x = 1,354.18