Finding the Fourth Proportional to 2,200.41, 3,300.61 and 902.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.41 : 3,300.61 = 902.79 : x
2. Step 2: Convert to fraction form
   2,200.41/3,300.61 = 902.79/x
3. Step 3: Cross multiply
   2,200.41x = 3,300.61 × 902.79
4. Step 4: Simplify right side
   2,200.41x = 2,979,757.70
5. Step 5: Solve for x
   x = 2,979,757.70/2,200.41
6. Step 6: Final answer
   x = 1,354.18