Finding the Fourth Proportional to 2,292.47, 3,436.57 and 905.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,292.47 : 3,436.57 = 905.82 : x
2. Step 2: Convert to fraction form
   2,292.47/3,436.57 = 905.82/x
3. Step 3: Cross multiply
   2,292.47x = 3,436.57 × 905.82
4. Step 4: Simplify right side
   2,292.47x = 3,112,913.84
5. Step 5: Solve for x
   x = 3,112,913.84/2,292.47
6. Step 6: Final answer
   x = 1,357.89