Finding the Fourth Proportional to 1,485.78, 2,046.69 and 1,419.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.78 : 2,046.69 = 1,419.54 : x
2. Step 2: Convert to fraction form
   1,485.78/2,046.69 = 1,419.54/x
3. Step 3: Cross multiply
   1,485.78x = 2,046.69 × 1,419.54
4. Step 4: Simplify right side
   1,485.78x = 2,905,358.32
5. Step 5: Solve for x
   x = 2,905,358.32/1,485.78
6. Step 6: Final answer
   x = 1,955.44