Finding the Fourth Proportional to 2,612.75, 3,605.60 and 1,433.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.75 : 3,605.60 = 1,433.83 : x
2. Step 2: Convert to fraction form
   2,612.75/3,605.60 = 1,433.83/x
3. Step 3: Cross multiply
   2,612.75x = 3,605.60 × 1,433.83
4. Step 4: Simplify right side
   2,612.75x = 5,169,817.45
5. Step 5: Solve for x
   x = 5,169,817.45/2,612.75
6. Step 6: Final answer
   x = 1,978.69