Finding the Fourth Proportional to 2,612.98, 3,605.91 and 1,434.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.98 : 3,605.91 = 1,434.07 : x
2. Step 2: Convert to fraction form
   2,612.98/3,605.91 = 1,434.07/x
3. Step 3: Cross multiply
   2,612.98x = 3,605.91 × 1,434.07
4. Step 4: Simplify right side
   2,612.98x = 5,171,127.35
5. Step 5: Solve for x
   x = 5,171,127.35/2,612.98
6. Step 6: Final answer
   x = 1,979.02