Finding the Fourth Proportional to 2,830.78, 4,242.79 and 1,186.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.78 : 4,242.79 = 1,186.75 : x
2. Step 2: Convert to fraction form
   2,830.78/4,242.79 = 1,186.75/x
3. Step 3: Cross multiply
   2,830.78x = 4,242.79 × 1,186.75
4. Step 4: Simplify right side
   2,830.78x = 5,035,131.03
5. Step 5: Solve for x
   x = 5,035,131.03/2,830.78
6. Step 6: Final answer
   x = 1,778.71