Finding the Fourth Proportional to 2,608.64, 3,599.90 and 1,429.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.64 : 3,599.90 = 1,429.71 : x
2. Step 2: Convert to fraction form
   2,608.64/3,599.90 = 1,429.71/x
3. Step 3: Cross multiply
   2,608.64x = 3,599.90 × 1,429.71
4. Step 4: Simplify right side
   2,608.64x = 5,146,813.03
5. Step 5: Solve for x
   x = 5,146,813.03/2,608.64
6. Step 6: Final answer
   x = 1,972.99