Finding the Fourth Proportional to 2,291.96, 3,436.41 and 904.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.96 : 3,436.41 = 904.43 : x
2. Step 2: Convert to fraction form
   2,291.96/3,436.41 = 904.43/x
3. Step 3: Cross multiply
   2,291.96x = 3,436.41 × 904.43
4. Step 4: Simplify right side
   2,291.96x = 3,107,992.30
5. Step 5: Solve for x
   x = 3,107,992.30/2,291.96
6. Step 6: Final answer
   x = 1,356.04