Finding the Fourth Proportional to 2,028.72, 3,048.76 and 1,207.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028.72 : 3,048.76 = 1,207.12 : x
2. Step 2: Convert to fraction form
   2,028.72/3,048.76 = 1,207.12/x
3. Step 3: Cross multiply
   2,028.72x = 3,048.76 × 1,207.12
4. Step 4: Simplify right side
   2,028.72x = 3,680,219.17
5. Step 5: Solve for x
   x = 3,680,219.17/2,028.72
6. Step 6: Final answer
   x = 1,814.06