Finding the Fourth Proportional to 2,015.67, 3,022.53 and 845.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.67 : 3,022.53 = 845.34 : x
2. Step 2: Convert to fraction form
   2,015.67/3,022.53 = 845.34/x
3. Step 3: Cross multiply
   2,015.67x = 3,022.53 × 845.34
4. Step 4: Simplify right side
   2,015.67x = 2,555,065.51
5. Step 5: Solve for x
   x = 2,555,065.51/2,015.67
6. Step 6: Final answer
   x = 1,267.60