Finding the Fourth Proportional to 2,556.77, 3,527.87 and 1,562.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.77 : 3,527.87 = 1,562.31 : x
2. Step 2: Convert to fraction form
   2,556.77/3,527.87 = 1,562.31/x
3. Step 3: Cross multiply
   2,556.77x = 3,527.87 × 1,562.31
4. Step 4: Simplify right side
   2,556.77x = 5,511,618.77
5. Step 5: Solve for x
   x = 5,511,618.77/2,556.77
6. Step 6: Final answer
   x = 2,155.70