Finding the Fourth Proportional to 1,768.43, 2,647.33 and 1,211.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.43 : 2,647.33 = 1,211.96 : x
2. Step 2: Convert to fraction form
   1,768.43/2,647.33 = 1,211.96/x
3. Step 3: Cross multiply
   1,768.43x = 2,647.33 × 1,211.96
4. Step 4: Simplify right side
   1,768.43x = 3,208,468.47
5. Step 5: Solve for x
   x = 3,208,468.47/1,768.43
6. Step 6: Final answer
   x = 1,814.30