Finding the Fourth Proportional to 2,608.58, 3,599.79 and 1,429.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.58 : 3,599.79 = 1,429.64 : x
2. Step 2: Convert to fraction form
   2,608.58/3,599.79 = 1,429.64/x
3. Step 3: Cross multiply
   2,608.58x = 3,599.79 × 1,429.64
4. Step 4: Simplify right side
   2,608.58x = 5,146,385.78
5. Step 5: Solve for x
   x = 5,146,385.78/2,608.58
6. Step 6: Final answer
   x = 1,972.87