Finding the Fourth Proportional to 1,488.54, 2,222.09 and 1,380.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.54 : 2,222.09 = 1,380.38 : x
2. Step 2: Convert to fraction form
   1,488.54/2,222.09 = 1,380.38/x
3. Step 3: Cross multiply
   1,488.54x = 2,222.09 × 1,380.38
4. Step 4: Simplify right side
   1,488.54x = 3,067,310.58
5. Step 5: Solve for x
   x = 3,067,310.58/1,488.54
6. Step 6: Final answer
   x = 2,060.62