Finding the Fourth Proportional to 2,815.39, 3,885.33 and 1,556.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,815.39 : 3,885.33 = 1,556.49 : x
2. Step 2: Convert to fraction form
   2,815.39/3,885.33 = 1,556.49/x
3. Step 3: Cross multiply
   2,815.39x = 3,885.33 × 1,556.49
4. Step 4: Simplify right side
   2,815.39x = 6,047,459.80
5. Step 5: Solve for x
   x = 6,047,459.80/2,815.39
6. Step 6: Final answer
   x = 2,148.00