Finding the Fourth Proportional to 1,766.22, 2,648.79 and 1,072.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,766.22 : 2,648.79 = 1,072.86 : x
2. Step 2: Convert to fraction form
   1,766.22/2,648.79 = 1,072.86/x
3. Step 3: Cross multiply
   1,766.22x = 2,648.79 × 1,072.86
4. Step 4: Simplify right side
   1,766.22x = 2,841,780.84
5. Step 5: Solve for x
   x = 2,841,780.84/1,766.22
6. Step 6: Final answer
   x = 1,608.96