Finding the Fourth Proportional to 2,556.72, 3,528 and 1,437.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.72 : 3,528 = 1,437.80 : x
2. Step 2: Convert to fraction form
   2,556.72/3,528 = 1,437.80/x
3. Step 3: Cross multiply
   2,556.72x = 3,528 × 1,437.80
4. Step 4: Simplify right side
   2,556.72x = 5,072,540.76
5. Step 5: Solve for x
   x = 5,072,540.76/2,556.72
6. Step 6: Final answer
   x = 1,984.00