Finding the Fourth Proportional to 1,488.73, 2,052.60 and 1,222.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.73 : 2,052.60 = 1,222.84 : x
2. Step 2: Convert to fraction form
   1,488.73/2,052.60 = 1,222.84/x
3. Step 3: Cross multiply
   1,488.73x = 2,052.60 × 1,222.84
4. Step 4: Simplify right side
   1,488.73x = 2,510,001.38
5. Step 5: Solve for x
   x = 2,510,001.38/1,488.73
6. Step 6: Final answer
   x = 1,686.00