Finding the Fourth Proportional to 2,290.34, 3,434.25 and 902.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.34 : 3,434.25 = 902.96 : x
2. Step 2: Convert to fraction form
   2,290.34/3,434.25 = 902.96/x
3. Step 3: Cross multiply
   2,290.34x = 3,434.25 × 902.96
4. Step 4: Simplify right side
   2,290.34x = 3,100,973.21
5. Step 5: Solve for x
   x = 3,100,973.21/2,290.34
6. Step 6: Final answer
   x = 1,353.94