Finding the Fourth Proportional to 3,885.98, 5,362.50 and 2,117.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,885.98 : 5,362.50 = 2,117.54 : x
2. Step 2: Convert to fraction form
   3,885.98/5,362.50 = 2,117.54/x
3. Step 3: Cross multiply
   3,885.98x = 5,362.50 × 2,117.54
4. Step 4: Simplify right side
   3,885.98x = 11,355,308.25
5. Step 5: Solve for x
   x = 11,355,308.25/3,885.98
6. Step 6: Final answer
   x = 2,922.12