Finding the Fourth Proportional to 1,605.27, 2,403.55 and 834.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.27 : 2,403.55 = 834.15 : x
2. Step 2: Convert to fraction form
   1,605.27/2,403.55 = 834.15/x
3. Step 3: Cross multiply
   1,605.27x = 2,403.55 × 834.15
4. Step 4: Simplify right side
   1,605.27x = 2,004,921.23
5. Step 5: Solve for x
   x = 2,004,921.23/1,605.27
6. Step 6: Final answer
   x = 1,248.96