Finding the Fourth Proportional to 2,290.80, 3,436.59 and 903.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.80 : 3,436.59 = 903.41 : x
2. Step 2: Convert to fraction form
   2,290.80/3,436.59 = 903.41/x
3. Step 3: Cross multiply
   2,290.80x = 3,436.59 × 903.41
4. Step 4: Simplify right side
   2,290.80x = 3,104,649.77
5. Step 5: Solve for x
   x = 3,104,649.77/2,290.80
6. Step 6: Final answer
   x = 1,355.27