Finding the Fourth Proportional to 2,147.64, 3,216.42 and 1,048.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.64 : 3,216.42 = 1,048.56 : x
2. Step 2: Convert to fraction form
   2,147.64/3,216.42 = 1,048.56/x
3. Step 3: Cross multiply
   2,147.64x = 3,216.42 × 1,048.56
4. Step 4: Simplify right side
   2,147.64x = 3,372,609.36
5. Step 5: Solve for x
   x = 3,372,609.36/2,147.64
6. Step 6: Final answer
   x = 1,570.38