Finding the Fourth Proportional to 1,100.90, 1,519.24 and 603.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.90 : 1,519.24 = 603.57 : x
2. Step 2: Convert to fraction form
   1,100.90/1,519.24 = 603.57/x
3. Step 3: Cross multiply
   1,100.90x = 1,519.24 × 603.57
4. Step 4: Simplify right side
   1,100.90x = 916,964.67
5. Step 5: Solve for x
   x = 916,964.67/1,100.90
6. Step 6: Final answer
   x = 832.92