Finding the Fourth Proportional to 2,185.13, 3,015.41 and 1,276.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.13 : 3,015.41 = 1,276.81 : x
2. Step 2: Convert to fraction form
   2,185.13/3,015.41 = 1,276.81/x
3. Step 3: Cross multiply
   2,185.13x = 3,015.41 × 1,276.81
4. Step 4: Simplify right side
   2,185.13x = 3,850,105.64
5. Step 5: Solve for x
   x = 3,850,105.64/2,185.13
6. Step 6: Final answer
   x = 1,761.96