Finding the Fourth Proportional to 2,608.12, 3,599.34 and 1,429.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.12 : 3,599.34 = 1,429.12 : x
2. Step 2: Convert to fraction form
   2,608.12/3,599.34 = 1,429.12/x
3. Step 3: Cross multiply
   2,608.12x = 3,599.34 × 1,429.12
4. Step 4: Simplify right side
   2,608.12x = 5,143,888.78
5. Step 5: Solve for x
   x = 5,143,888.78/2,608.12
6. Step 6: Final answer
   x = 1,972.26