Finding the Fourth Proportional to 2,608.72, 3,600 and 1,429.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.72 : 3,600 = 1,429.81 : x
2. Step 2: Convert to fraction form
   2,608.72/3,600 = 1,429.81/x
3. Step 3: Cross multiply
   2,608.72x = 3,600 × 1,429.81
4. Step 4: Simplify right side
   2,608.72x = 5,147,316
5. Step 5: Solve for x
   x = 5,147,316/2,608.72
6. Step 6: Final answer
   x = 1,973.12