Finding the Fourth Proportional to 2,740.05, 4,111.29 and 985.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.05 : 4,111.29 = 985.59 : x
2. Step 2: Convert to fraction form
   2,740.05/4,111.29 = 985.59/x
3. Step 3: Cross multiply
   2,740.05x = 4,111.29 × 985.59
4. Step 4: Simplify right side
   2,740.05x = 4,052,046.31
5. Step 5: Solve for x
   x = 4,052,046.31/2,740.05
6. Step 6: Final answer
   x = 1,478.82