Finding the Fourth Proportional to 2,379.78, 3,570.96 and 1,081.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.78 : 3,570.96 = 1,081.14 : x
2. Step 2: Convert to fraction form
   2,379.78/3,570.96 = 1,081.14/x
3. Step 3: Cross multiply
   2,379.78x = 3,570.96 × 1,081.14
4. Step 4: Simplify right side
   2,379.78x = 3,860,707.69
5. Step 5: Solve for x
   x = 3,860,707.69/2,379.78
6. Step 6: Final answer
   x = 1,622.30