Finding the Fourth Proportional to 3,885.25, 5,826.18 and 1,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,885.25 : 5,826.18 = 1,111.31 : x
2. Step 2: Convert to fraction form
   3,885.25/5,826.18 = 1,111.31/x
3. Step 3: Cross multiply
   3,885.25x = 5,826.18 × 1,111.31
4. Step 4: Simplify right side
   3,885.25x = 6,474,692.10
5. Step 5: Solve for x
   x = 6,474,692.10/3,885.25
6. Step 6: Final answer
   x = 1,666.48