Finding the Fourth Proportional to 2,556, 3,527.45 and 1,421.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556 : 3,527.45 = 1,421.83 : x
2. Step 2: Convert to fraction form
   2,556/3,527.45 = 1,421.83/x
3. Step 3: Cross multiply
   2,556x = 3,527.45 × 1,421.83
4. Step 4: Simplify right side
   2,556x = 5,015,442.20
5. Step 5: Solve for x
   x = 5,015,442.20/2,556
6. Step 6: Final answer
   x = 1,962.22