Finding the Fourth Proportional to 1,604.55, 2,403.71 and 909.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,604.55 : 2,403.71 = 909.08 : x
2. Step 2: Convert to fraction form
   1,604.55/2,403.71 = 909.08/x
3. Step 3: Cross multiply
   1,604.55x = 2,403.71 × 909.08
4. Step 4: Simplify right side
   1,604.55x = 2,185,164.69
5. Step 5: Solve for x
   x = 2,185,164.69/1,604.55
6. Step 6: Final answer
   x = 1,361.86