Finding the Fourth Proportional to 2,610.66, 3,602.71 and 1,431.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.66 : 3,602.71 = 1,431.73 : x
2. Step 2: Convert to fraction form
   2,610.66/3,602.71 = 1,431.73/x
3. Step 3: Cross multiply
   2,610.66x = 3,602.71 × 1,431.73
4. Step 4: Simplify right side
   2,610.66x = 5,158,108.91
5. Step 5: Solve for x
   x = 5,158,108.91/2,610.66
6. Step 6: Final answer
   x = 1,975.79