Finding the Fourth Proportional to 1,801.83, 2,486.27 and 1,015.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,801.83 : 2,486.27 = 1,015.89 : x
2. Step 2: Convert to fraction form
   1,801.83/2,486.27 = 1,015.89/x
3. Step 3: Cross multiply
   1,801.83x = 2,486.27 × 1,015.89
4. Step 4: Simplify right side
   1,801.83x = 2,525,771.75
5. Step 5: Solve for x
   x = 2,525,771.75/1,801.83
6. Step 6: Final answer
   x = 1,401.78