Finding the Fourth Proportional to 2,743.77, 4,116.78 and 989.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,743.77 : 4,116.78 = 989.01 : x
2. Step 2: Convert to fraction form
   2,743.77/4,116.78 = 989.01/x
3. Step 3: Cross multiply
   2,743.77x = 4,116.78 × 989.01
4. Step 4: Simplify right side
   2,743.77x = 4,071,536.59
5. Step 5: Solve for x
   x = 4,071,536.59/2,743.77
6. Step 6: Final answer
   x = 1,483.92