Finding the Fourth Proportional to 1,802.05, 2,486.77 and 1,005.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.05 : 2,486.77 = 1,005.37 : x
2. Step 2: Convert to fraction form
   1,802.05/2,486.77 = 1,005.37/x
3. Step 3: Cross multiply
   1,802.05x = 2,486.77 × 1,005.37
4. Step 4: Simplify right side
   1,802.05x = 2,500,119.09
5. Step 5: Solve for x
   x = 2,500,119.09/1,802.05
6. Step 6: Final answer
   x = 1,387.37