Finding the Fourth Proportional to 2,556.98, 3,528.76 and 1,438.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.98 : 3,528.76 = 1,438.27 : x
2. Step 2: Convert to fraction form
   2,556.98/3,528.76 = 1,438.27/x
3. Step 3: Cross multiply
   2,556.98x = 3,528.76 × 1,438.27
4. Step 4: Simplify right side
   2,556.98x = 5,075,309.65
5. Step 5: Solve for x
   x = 5,075,309.65/2,556.98
6. Step 6: Final answer
   x = 1,984.88