Finding the Fourth Proportional to 2,612.89, 3,605.84 and 1,433.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.89 : 3,605.84 = 1,433.95 : x
2. Step 2: Convert to fraction form
   2,612.89/3,605.84 = 1,433.95/x
3. Step 3: Cross multiply
   2,612.89x = 3,605.84 × 1,433.95
4. Step 4: Simplify right side
   2,612.89x = 5,170,594.27
5. Step 5: Solve for x
   x = 5,170,594.27/2,612.89
6. Step 6: Final answer
   x = 1,978.88