Finding the Fourth Proportional to 2,289.93, 3,436.31 and 903.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.93 : 3,436.31 = 903.02 : x
2. Step 2: Convert to fraction form
   2,289.93/3,436.31 = 903.02/x
3. Step 3: Cross multiply
   2,289.93x = 3,436.31 × 903.02
4. Step 4: Simplify right side
   2,289.93x = 3,103,060.73
5. Step 5: Solve for x
   x = 3,103,060.73/2,289.93
6. Step 6: Final answer
   x = 1,355.09