Finding the Fourth Proportional to 2,612.91, 3,605.81 and 1,434.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.91 : 3,605.81 = 1,434.01 : x
2. Step 2: Convert to fraction form
   2,612.91/3,605.81 = 1,434.01/x
3. Step 3: Cross multiply
   2,612.91x = 3,605.81 × 1,434.01
4. Step 4: Simplify right side
   2,612.91x = 5,170,762.17
5. Step 5: Solve for x
   x = 5,170,762.17/2,612.91
6. Step 6: Final answer
   x = 1,978.93