Finding the Fourth Proportional to 2,612.94, 3,605.67 and 1,434.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.94 : 3,605.67 = 1,434.03 : x
2. Step 2: Convert to fraction form
   2,612.94/3,605.67 = 1,434.03/x
3. Step 3: Cross multiply
   2,612.94x = 3,605.67 × 1,434.03
4. Step 4: Simplify right side
   2,612.94x = 5,170,638.95
5. Step 5: Solve for x
   x = 5,170,638.95/2,612.94
6. Step 6: Final answer
   x = 1,978.86