Finding the Fourth Proportional to 1,715.55, 2,571.59 and 676.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,715.55 : 2,571.59 = 676.28 : x
2. Step 2: Convert to fraction form
   1,715.55/2,571.59 = 676.28/x
3. Step 3: Cross multiply
   1,715.55x = 2,571.59 × 676.28
4. Step 4: Simplify right side
   1,715.55x = 1,739,123.00
5. Step 5: Solve for x
   x = 1,739,123.00/1,715.55
6. Step 6: Final answer
   x = 1,013.74