Finding the Fourth Proportional to 2,735.78, 3,775.39 and 1,556.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,735.78 : 3,775.39 = 1,556.91 : x
2. Step 2: Convert to fraction form
   2,735.78/3,775.39 = 1,556.91/x
3. Step 3: Cross multiply
   2,735.78x = 3,775.39 × 1,556.91
4. Step 4: Simplify right side
   2,735.78x = 5,877,938.55
5. Step 5: Solve for x
   x = 5,877,938.55/2,735.78
6. Step 6: Final answer
   x = 2,148.55