Finding the Fourth Proportional to 1,801.22, 2,485.83 and 1,015.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,801.22 : 2,485.83 = 1,015.43 : x
2. Step 2: Convert to fraction form
   1,801.22/2,485.83 = 1,015.43/x
3. Step 3: Cross multiply
   1,801.22x = 2,485.83 × 1,015.43
4. Step 4: Simplify right side
   1,801.22x = 2,524,173.93
5. Step 5: Solve for x
   x = 2,524,173.93/1,801.22
6. Step 6: Final answer
   x = 1,401.37