Finding the Fourth Proportional to 2,407.69, 3,611.68 and 676.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,407.69 : 3,611.68 = 676.45 : x
2. Step 2: Convert to fraction form
   2,407.69/3,611.68 = 676.45/x
3. Step 3: Cross multiply
   2,407.69x = 3,611.68 × 676.45
4. Step 4: Simplify right side
   2,407.69x = 2,443,110.22
5. Step 5: Solve for x
   x = 2,443,110.22/2,407.69
6. Step 6: Final answer
   x = 1,014.71