Finding the Fourth Proportional to 2,291.27, 3,436.20 and 904.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.27 : 3,436.20 = 904.96 : x
2. Step 2: Convert to fraction form
   2,291.27/3,436.20 = 904.96/x
3. Step 3: Cross multiply
   2,291.27x = 3,436.20 × 904.96
4. Step 4: Simplify right side
   2,291.27x = 3,109,614.96
5. Step 5: Solve for x
   x = 3,109,614.96/2,291.27
6. Step 6: Final answer
   x = 1,357.16