Finding the Fourth Proportional to 1,671.96, 2,308.20 and 1,082.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,671.96 : 2,308.20 = 1,082.85 : x
2. Step 2: Convert to fraction form
   1,671.96/2,308.20 = 1,082.85/x
3. Step 3: Cross multiply
   1,671.96x = 2,308.20 × 1,082.85
4. Step 4: Simplify right side
   1,671.96x = 2,499,434.37
5. Step 5: Solve for x
   x = 2,499,434.37/1,671.96
6. Step 6: Final answer
   x = 1,494.91