Finding the Fourth Proportional to 1,801.62, 2,485.98 and 1,015.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,801.62 : 2,485.98 = 1,015.74 : x
2. Step 2: Convert to fraction form
   1,801.62/2,485.98 = 1,015.74/x
3. Step 3: Cross multiply
   1,801.62x = 2,485.98 × 1,015.74
4. Step 4: Simplify right side
   1,801.62x = 2,525,109.33
5. Step 5: Solve for x
   x = 2,525,109.33/1,801.62
6. Step 6: Final answer
   x = 1,401.58