Finding the Fourth Proportional to 1,045.76, 1,443.06 and 603.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.76 : 1,443.06 = 603.72 : x
2. Step 2: Convert to fraction form
   1,045.76/1,443.06 = 603.72/x
3. Step 3: Cross multiply
   1,045.76x = 1,443.06 × 603.72
4. Step 4: Simplify right side
   1,045.76x = 871,204.18
5. Step 5: Solve for x
   x = 871,204.18/1,045.76
6. Step 6: Final answer
   x = 833.09