Finding the Fourth Proportional to 2,007.45, 3,012.03 and 1,082.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.45 : 3,012.03 = 1,082.79 : x
2. Step 2: Convert to fraction form
   2,007.45/3,012.03 = 1,082.79/x
3. Step 3: Cross multiply
   2,007.45x = 3,012.03 × 1,082.79
4. Step 4: Simplify right side
   2,007.45x = 3,261,395.96
5. Step 5: Solve for x
   x = 3,261,395.96/2,007.45
6. Step 6: Final answer
   x = 1,624.65