Finding the Fourth Proportional to 2,042.67, 2,817.90 and 1,255.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.67 : 2,817.90 = 1,255.35 : x
2. Step 2: Convert to fraction form
   2,042.67/2,817.90 = 1,255.35/x
3. Step 3: Cross multiply
   2,042.67x = 2,817.90 × 1,255.35
4. Step 4: Simplify right side
   2,042.67x = 3,537,450.77
5. Step 5: Solve for x
   x = 3,537,450.77/2,042.67
6. Step 6: Final answer
   x = 1,731.78