Finding the Fourth Proportional to 2,741.78, 4,112.22 and 986.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,741.78 : 4,112.22 = 986.42 : x
2. Step 2: Convert to fraction form
   2,741.78/4,112.22 = 986.42/x
3. Step 3: Cross multiply
   2,741.78x = 4,112.22 × 986.42
4. Step 4: Simplify right side
   2,741.78x = 4,056,376.05
5. Step 5: Solve for x
   x = 4,056,376.05/2,741.78
6. Step 6: Final answer
   x = 1,479.47