Finding the Fourth Proportional to 1,198.58, 1,654.61 and 883.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198.58 : 1,654.61 = 883.89 : x
2. Step 2: Convert to fraction form
   1,198.58/1,654.61 = 883.89/x
3. Step 3: Cross multiply
   1,198.58x = 1,654.61 × 883.89
4. Step 4: Simplify right side
   1,198.58x = 1,462,488.81
5. Step 5: Solve for x
   x = 1,462,488.81/1,198.58
6. Step 6: Final answer
   x = 1,220.19