Finding the Fourth Proportional to 1,978.72, 2,729.12 and 1,766.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.72 : 2,729.12 = 1,766.22 : x
2. Step 2: Convert to fraction form
   1,978.72/2,729.12 = 1,766.22/x
3. Step 3: Cross multiply
   1,978.72x = 2,729.12 × 1,766.22
4. Step 4: Simplify right side
   1,978.72x = 4,820,226.33
5. Step 5: Solve for x
   x = 4,820,226.33/1,978.72
6. Step 6: Final answer
   x = 2,436.03