Finding the Fourth Proportional to 3,085.89, 4,629.12 and 1,005.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,085.89 : 4,629.12 = 1,005.81 : x
2. Step 2: Convert to fraction form
   3,085.89/4,629.12 = 1,005.81/x
3. Step 3: Cross multiply
   3,085.89x = 4,629.12 × 1,005.81
4. Step 4: Simplify right side
   3,085.89x = 4,656,015.19
5. Step 5: Solve for x
   x = 4,656,015.19/3,085.89
6. Step 6: Final answer
   x = 1,508.81