Finding the Fourth Proportional to 1,076.33, 1,603.67 and 1,005.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.33 : 1,603.67 = 1,005.61 : x
2. Step 2: Convert to fraction form
   1,076.33/1,603.67 = 1,005.61/x
3. Step 3: Cross multiply
   1,076.33x = 1,603.67 × 1,005.61
4. Step 4: Simplify right side
   1,076.33x = 1,612,658.57
5. Step 5: Solve for x
   x = 1,612,658.57/1,076.33
6. Step 6: Final answer
   x = 1,498.30