Finding the Fourth Proportional to 2,015.79, 3,024.85 and 845.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.79 : 3,024.85 = 845.69 : x
2. Step 2: Convert to fraction form
   2,015.79/3,024.85 = 845.69/x
3. Step 3: Cross multiply
   2,015.79x = 3,024.85 × 845.69
4. Step 4: Simplify right side
   2,015.79x = 2,558,077.83
5. Step 5: Solve for x
   x = 2,558,077.83/2,015.79
6. Step 6: Final answer
   x = 1,269.02