Finding the Fourth Proportional to 3,674.84, 5,072.73 and 2,556.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,674.84 : 5,072.73 = 2,556.43 : x
2. Step 2: Convert to fraction form
   3,674.84/5,072.73 = 2,556.43/x
3. Step 3: Cross multiply
   3,674.84x = 5,072.73 × 2,556.43
4. Step 4: Simplify right side
   3,674.84x = 12,968,079.15
5. Step 5: Solve for x
   x = 12,968,079.15/3,674.84
6. Step 6: Final answer
   x = 3,528.88