Finding the Fourth Proportional to 1,998.84, 2,758.42 and 1,159.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,998.84 : 2,758.42 = 1,159.54 : x
2. Step 2: Convert to fraction form
   1,998.84/2,758.42 = 1,159.54/x
3. Step 3: Cross multiply
   1,998.84x = 2,758.42 × 1,159.54
4. Step 4: Simplify right side
   1,998.84x = 3,198,498.33
5. Step 5: Solve for x
   x = 3,198,498.33/1,998.84
6. Step 6: Final answer
   x = 1,600.18