Finding the Fourth Proportional to 1,801.74, 2,486.54 and 1,015.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,801.74 : 2,486.54 = 1,015.86 : x
2. Step 2: Convert to fraction form
   1,801.74/2,486.54 = 1,015.86/x
3. Step 3: Cross multiply
   1,801.74x = 2,486.54 × 1,015.86
4. Step 4: Simplify right side
   1,801.74x = 2,525,976.52
5. Step 5: Solve for x
   x = 2,525,976.52/1,801.74
6. Step 6: Final answer
   x = 1,401.97