Finding the Fourth Proportional to 1,100.72, 1,518.99 and 603.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.72 : 1,518.99 = 603.36 : x
2. Step 2: Convert to fraction form
   1,100.72/1,518.99 = 603.36/x
3. Step 3: Cross multiply
   1,100.72x = 1,518.99 × 603.36
4. Step 4: Simplify right side
   1,100.72x = 916,500.07
5. Step 5: Solve for x
   x = 916,500.07/1,100.72
6. Step 6: Final answer
   x = 832.64