Finding the Fourth Proportional to 2,608.60, 3,599.62 and 1,429.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.60 : 3,599.62 = 1,429.72 : x
2. Step 2: Convert to fraction form
   2,608.60/3,599.62 = 1,429.72/x
3. Step 3: Cross multiply
   2,608.60x = 3,599.62 × 1,429.72
4. Step 4: Simplify right side
   2,608.60x = 5,146,448.71
5. Step 5: Solve for x
   x = 5,146,448.71/2,608.60
6. Step 6: Final answer
   x = 1,972.88