Finding the Fourth Proportional to 1,100.43, 1,518.57 and 603.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.43 : 1,518.57 = 603.09 : x
2. Step 2: Convert to fraction form
   1,100.43/1,518.57 = 603.09/x
3. Step 3: Cross multiply
   1,100.43x = 1,518.57 × 603.09
4. Step 4: Simplify right side
   1,100.43x = 915,834.38
5. Step 5: Solve for x
   x = 915,834.38/1,100.43
6. Step 6: Final answer
   x = 832.25