Finding the Fourth Proportional to 2,200.50, 3,301.42 and 902.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.50 : 3,301.42 = 902.07 : x
2. Step 2: Convert to fraction form
   2,200.50/3,301.42 = 902.07/x
3. Step 3: Cross multiply
   2,200.50x = 3,301.42 × 902.07
4. Step 4: Simplify right side
   2,200.50x = 2,978,111.94
5. Step 5: Solve for x
   x = 2,978,111.94/2,200.50
6. Step 6: Final answer
   x = 1,353.38