Finding the Fourth Proportional to 2,989.89, 4,485.15 and 1,015.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,989.89 : 4,485.15 = 1,015.47 : x
2. Step 2: Convert to fraction form
   2,989.89/4,485.15 = 1,015.47/x
3. Step 3: Cross multiply
   2,989.89x = 4,485.15 × 1,015.47
4. Step 4: Simplify right side
   2,989.89x = 4,554,535.27
5. Step 5: Solve for x
   x = 4,554,535.27/2,989.89
6. Step 6: Final answer
   x = 1,523.31