Finding the Fourth Proportional to 1,262.56, 1,889.80 and 676.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,262.56 : 1,889.80 = 676.10 : x
2. Step 2: Convert to fraction form
   1,262.56/1,889.80 = 676.10/x
3. Step 3: Cross multiply
   1,262.56x = 1,889.80 × 676.10
4. Step 4: Simplify right side
   1,262.56x = 1,277,693.78
5. Step 5: Solve for x
   x = 1,277,693.78/1,262.56
6. Step 6: Final answer
   x = 1,011.99