Finding the Fourth Proportional to 1,045.78, 1,443.18 and 603.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.78 : 1,443.18 = 603.59 : x
2. Step 2: Convert to fraction form
   1,045.78/1,443.18 = 603.59/x
3. Step 3: Cross multiply
   1,045.78x = 1,443.18 × 603.59
4. Step 4: Simplify right side
   1,045.78x = 871,089.02
5. Step 5: Solve for x
   x = 871,089.02/1,045.78
6. Step 6: Final answer
   x = 832.96