Finding the Fourth Proportional to 2,715.81, 3,747.78 and 1,536.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.81 : 3,747.78 = 1,536.89 : x
2. Step 2: Convert to fraction form
   2,715.81/3,747.78 = 1,536.89/x
3. Step 3: Cross multiply
   2,715.81x = 3,747.78 × 1,536.89
4. Step 4: Simplify right side
   2,715.81x = 5,759,906.87
5. Step 5: Solve for x
   x = 5,759,906.87/2,715.81
6. Step 6: Final answer
   x = 2,120.88