Finding the Fourth Proportional to 2,612.73, 3,605.55 and 1,433.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.73 : 3,605.55 = 1,433.81 : x
2. Step 2: Convert to fraction form
   2,612.73/3,605.55 = 1,433.81/x
3. Step 3: Cross multiply
   2,612.73x = 3,605.55 × 1,433.81
4. Step 4: Simplify right side
   2,612.73x = 5,169,673.65
5. Step 5: Solve for x
   x = 5,169,673.65/2,612.73
6. Step 6: Final answer
   x = 1,978.65