Finding the Fourth Proportional to 1,100.42, 1,518.52 and 603.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.42 : 1,518.52 = 603.03 : x
2. Step 2: Convert to fraction form
   1,100.42/1,518.52 = 603.03/x
3. Step 3: Cross multiply
   1,100.42x = 1,518.52 × 603.03
4. Step 4: Simplify right side
   1,100.42x = 915,713.12
5. Step 5: Solve for x
   x = 915,713.12/1,100.42
6. Step 6: Final answer
   x = 832.15