Finding the Fourth Proportional to 1,045.31, 1,442.57 and 603.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.31 : 1,442.57 = 603.27 : x
2. Step 2: Convert to fraction form
   1,045.31/1,442.57 = 603.27/x
3. Step 3: Cross multiply
   1,045.31x = 1,442.57 × 603.27
4. Step 4: Simplify right side
   1,045.31x = 870,259.20
5. Step 5: Solve for x
   x = 870,259.20/1,045.31
6. Step 6: Final answer
   x = 832.54