Finding the Fourth Proportional to 2,290.82, 3,433.93 and 905.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.82 : 3,433.93 = 905.14 : x
2. Step 2: Convert to fraction form
   2,290.82/3,433.93 = 905.14/x
3. Step 3: Cross multiply
   2,290.82x = 3,433.93 × 905.14
4. Step 4: Simplify right side
   2,290.82x = 3,108,192.82
5. Step 5: Solve for x
   x = 3,108,192.82/2,290.82
6. Step 6: Final answer
   x = 1,356.80