Finding the Fourth Proportional to 2,610.12, 3,601.94 and 1,431.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.12 : 3,601.94 = 1,431.30 : x
2. Step 2: Convert to fraction form
   2,610.12/3,601.94 = 1,431.30/x
3. Step 3: Cross multiply
   2,610.12x = 3,601.94 × 1,431.30
4. Step 4: Simplify right side
   2,610.12x = 5,155,456.72
5. Step 5: Solve for x
   x = 5,155,456.72/2,610.12
6. Step 6: Final answer
   x = 1,975.18