Finding the Fourth Proportional to 1,045.24, 1,442.56 and 603.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.24 : 1,442.56 = 603.15 : x
2. Step 2: Convert to fraction form
   1,045.24/1,442.56 = 603.15/x
3. Step 3: Cross multiply
   1,045.24x = 1,442.56 × 603.15
4. Step 4: Simplify right side
   1,045.24x = 870,080.06
5. Step 5: Solve for x
   x = 870,080.06/1,045.24
6. Step 6: Final answer
   x = 832.42