Finding the Fourth Proportional to 2,556.48, 3,528.16 and 1,437.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.48 : 3,528.16 = 1,437.60 : x
2. Step 2: Convert to fraction form
   2,556.48/3,528.16 = 1,437.60/x
3. Step 3: Cross multiply
   2,556.48x = 3,528.16 × 1,437.60
4. Step 4: Simplify right side
   2,556.48x = 5,072,082.82
5. Step 5: Solve for x
   x = 5,072,082.82/2,556.48
6. Step 6: Final answer
   x = 1,984.01