Finding the Fourth Proportional to 2,609.94, 3,601.68 and 1,431.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.94 : 3,601.68 = 1,431.01 : x
2. Step 2: Convert to fraction form
   2,609.94/3,601.68 = 1,431.01/x
3. Step 3: Cross multiply
   2,609.94x = 3,601.68 × 1,431.01
4. Step 4: Simplify right side
   2,609.94x = 5,154,022.09
5. Step 5: Solve for x
   x = 5,154,022.09/2,609.94
6. Step 6: Final answer
   x = 1,974.77