Finding the Fourth Proportional to 1,915.67, 2,872.53 and 682.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.67 : 2,872.53 = 682.89 : x
2. Step 2: Convert to fraction form
   1,915.67/2,872.53 = 682.89/x
3. Step 3: Cross multiply
   1,915.67x = 2,872.53 × 682.89
4. Step 4: Simplify right side
   1,915.67x = 1,961,622.01
5. Step 5: Solve for x
   x = 1,961,622.01/1,915.67
6. Step 6: Final answer
   x = 1,023.99