Finding the Fourth Proportional to 2,610.26, 3,602.20 and 1,431.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.26 : 3,602.20 = 1,431.32 : x
2. Step 2: Convert to fraction form
   2,610.26/3,602.20 = 1,431.32/x
3. Step 3: Cross multiply
   2,610.26x = 3,602.20 × 1,431.32
4. Step 4: Simplify right side
   2,610.26x = 5,155,900.90
5. Step 5: Solve for x
   x = 5,155,900.90/2,610.26
6. Step 6: Final answer
   x = 1,975.24