Finding the Fourth Proportional to 3,885.82, 5,827.23 and 1,288.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,885.82 : 5,827.23 = 1,288.06 : x
2. Step 2: Convert to fraction form
   3,885.82/5,827.23 = 1,288.06/x
3. Step 3: Cross multiply
   3,885.82x = 5,827.23 × 1,288.06
4. Step 4: Simplify right side
   3,885.82x = 7,505,821.87
5. Step 5: Solve for x
   x = 7,505,821.87/3,885.82
6. Step 6: Final answer
   x = 1,931.59