Finding the Fourth Proportional to 3,654.78, 5,043.16 and 2,162.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,654.78 : 5,043.16 = 2,162.35 : x
2. Step 2: Convert to fraction form
   3,654.78/5,043.16 = 2,162.35/x
3. Step 3: Cross multiply
   3,654.78x = 5,043.16 × 2,162.35
4. Step 4: Simplify right side
   3,654.78x = 10,905,077.03
5. Step 5: Solve for x
   x = 10,905,077.03/3,654.78
6. Step 6: Final answer
   x = 2,983.78