Finding the Fourth Proportional to 2,830.39, 4,247.24 and 1,186.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.39 : 4,247.24 = 1,186.81 : x
2. Step 2: Convert to fraction form
   2,830.39/4,247.24 = 1,186.81/x
3. Step 3: Cross multiply
   2,830.39x = 4,247.24 × 1,186.81
4. Step 4: Simplify right side
   2,830.39x = 5,040,650.35
5. Step 5: Solve for x
   x = 5,040,650.35/2,830.39
6. Step 6: Final answer
   x = 1,780.90