Finding the Fourth Proportional to 2,239.50, 3,359.92 and 904.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,239.50 : 3,359.92 = 904.61 : x
2. Step 2: Convert to fraction form
   2,239.50/3,359.92 = 904.61/x
3. Step 3: Cross multiply
   2,239.50x = 3,359.92 × 904.61
4. Step 4: Simplify right side
   2,239.50x = 3,039,398.17
5. Step 5: Solve for x
   x = 3,039,398.17/2,239.50
6. Step 6: Final answer
   x = 1,357.18