Finding the Fourth Proportional to 2,740.86, 4,111.47 and 986.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.86 : 4,111.47 = 986.22 : x
2. Step 2: Convert to fraction form
   2,740.86/4,111.47 = 986.22/x
3. Step 3: Cross multiply
   2,740.86x = 4,111.47 × 986.22
4. Step 4: Simplify right side
   2,740.86x = 4,054,813.94
5. Step 5: Solve for x
   x = 4,054,813.94/2,740.86
6. Step 6: Final answer
   x = 1,479.39