Finding the Fourth Proportional to 3,911.01, 5,866.72 and 989.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,911.01 : 5,866.72 = 989.34 : x
2. Step 2: Convert to fraction form
   3,911.01/5,866.72 = 989.34/x
3. Step 3: Cross multiply
   3,911.01x = 5,866.72 × 989.34
4. Step 4: Simplify right side
   3,911.01x = 5,804,180.76
5. Step 5: Solve for x
   x = 5,804,180.76/3,911.01
6. Step 6: Final answer
   x = 1,484.06