Finding the Fourth Proportional to 1,045.61, 1,443.01 and 603.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.61 : 1,443.01 = 603.50 : x
2. Step 2: Convert to fraction form
   1,045.61/1,443.01 = 603.50/x
3. Step 3: Cross multiply
   1,045.61x = 1,443.01 × 603.50
4. Step 4: Simplify right side
   1,045.61x = 870,849.91
5. Step 5: Solve for x
   x = 870,849.91/1,045.61
6. Step 6: Final answer
   x = 832.87