Finding the Fourth Proportional to 2,048.32, 3,074.31 and 1,318.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.32 : 3,074.31 = 1,318.72 : x
2. Step 2: Convert to fraction form
   2,048.32/3,074.31 = 1,318.72/x
3. Step 3: Cross multiply
   2,048.32x = 3,074.31 × 1,318.72
4. Step 4: Simplify right side
   2,048.32x = 4,054,154.08
5. Step 5: Solve for x
   x = 4,054,154.08/2,048.32
6. Step 6: Final answer
   x = 1,979.26