Finding the Fourth Proportional to 1,660.72, 2,476.16 and 1,631.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,660.72 : 2,476.16 = 1,631.56 : x
2. Step 2: Convert to fraction form
   1,660.72/2,476.16 = 1,631.56/x
3. Step 3: Cross multiply
   1,660.72x = 2,476.16 × 1,631.56
4. Step 4: Simplify right side
   1,660.72x = 4,040,003.61
5. Step 5: Solve for x
   x = 4,040,003.61/1,660.72
6. Step 6: Final answer
   x = 2,432.68