Finding the Fourth Proportional to 1,100.81, 1,519.12 and 603.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.81 : 1,519.12 = 603.49 : x
2. Step 2: Convert to fraction form
   1,100.81/1,519.12 = 603.49/x
3. Step 3: Cross multiply
   1,100.81x = 1,519.12 × 603.49
4. Step 4: Simplify right side
   1,100.81x = 916,773.73
5. Step 5: Solve for x
   x = 916,773.73/1,100.81
6. Step 6: Final answer
   x = 832.82