Finding the Fourth Proportional to 1,910.98, 2,638.46 and 1,282.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,910.98 : 2,638.46 = 1,282.45 : x
2. Step 2: Convert to fraction form
   1,910.98/2,638.46 = 1,282.45/x
3. Step 3: Cross multiply
   1,910.98x = 2,638.46 × 1,282.45
4. Step 4: Simplify right side
   1,910.98x = 3,383,693.03
5. Step 5: Solve for x
   x = 3,383,693.03/1,910.98
6. Step 6: Final answer
   x = 1,770.66