Finding the Fourth Proportional to 1,045.89, 1,443.33 and 603.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.89 : 1,443.33 = 603.95 : x
2. Step 2: Convert to fraction form
   1,045.89/1,443.33 = 603.95/x
3. Step 3: Cross multiply
   1,045.89x = 1,443.33 × 603.95
4. Step 4: Simplify right side
   1,045.89x = 871,691.94
5. Step 5: Solve for x
   x = 871,691.94/1,045.89
6. Step 6: Final answer
   x = 833.45