Finding the Fourth Proportional to 2,015.89, 3,023.87 and 1,148.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.89 : 3,023.87 = 1,148.38 : x
2. Step 2: Convert to fraction form
   2,015.89/3,023.87 = 1,148.38/x
3. Step 3: Cross multiply
   2,015.89x = 3,023.87 × 1,148.38
4. Step 4: Simplify right side
   2,015.89x = 3,472,551.83
5. Step 5: Solve for x
   x = 3,472,551.83/2,015.89
6. Step 6: Final answer
   x = 1,722.59