Finding the Fourth Proportional to 3,675.45, 5,072.31 and 2,103.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,675.45 : 5,072.31 = 2,103.51 : x
2. Step 2: Convert to fraction form
   3,675.45/5,072.31 = 2,103.51/x
3. Step 3: Cross multiply
   3,675.45x = 5,072.31 × 2,103.51
4. Step 4: Simplify right side
   3,675.45x = 10,669,654.81
5. Step 5: Solve for x
   x = 10,669,654.81/3,675.45
6. Step 6: Final answer
   x = 2,902.95