Finding the Fourth Proportional to 2,428.82, 3,642.50 and 673.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.82 : 3,642.50 = 673.40 : x
2. Step 2: Convert to fraction form
   2,428.82/3,642.50 = 673.40/x
3. Step 3: Cross multiply
   2,428.82x = 3,642.50 × 673.40
4. Step 4: Simplify right side
   2,428.82x = 2,452,859.50
5. Step 5: Solve for x
   x = 2,452,859.50/2,428.82
6. Step 6: Final answer
   x = 1,009.90