Finding the Fourth Proportional to 2,612.99, 3,605.92 and 1,434.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.99 : 3,605.92 = 1,434.05 : x
2. Step 2: Convert to fraction form
   2,612.99/3,605.92 = 1,434.05/x
3. Step 3: Cross multiply
   2,612.99x = 3,605.92 × 1,434.05
4. Step 4: Simplify right side
   2,612.99x = 5,171,081.77
5. Step 5: Solve for x
   x = 5,171,081.77/2,612.99
6. Step 6: Final answer
   x = 1,978.99