Finding the Fourth Proportional to 2,610.64, 3,602.67 and 1,431.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.64 : 3,602.67 = 1,431.73 : x
2. Step 2: Convert to fraction form
   2,610.64/3,602.67 = 1,431.73/x
3. Step 3: Cross multiply
   2,610.64x = 3,602.67 × 1,431.73
4. Step 4: Simplify right side
   2,610.64x = 5,158,050.72
5. Step 5: Solve for x
   x = 5,158,050.72/2,610.64
6. Step 6: Final answer
   x = 1,975.78