Finding the Fourth Proportional to 1,045.64, 1,443.05 and 603.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.64 : 1,443.05 = 603.57 : x
2. Step 2: Convert to fraction form
   1,045.64/1,443.05 = 603.57/x
3. Step 3: Cross multiply
   1,045.64x = 1,443.05 × 603.57
4. Step 4: Simplify right side
   1,045.64x = 870,978.67
5. Step 5: Solve for x
   x = 870,978.67/1,045.64
6. Step 6: Final answer
   x = 832.97