Finding the Fourth Proportional to 1,100.91, 1,519.27 and 603.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.91 : 1,519.27 = 603.55 : x
2. Step 2: Convert to fraction form
   1,100.91/1,519.27 = 603.55/x
3. Step 3: Cross multiply
   1,100.91x = 1,519.27 × 603.55
4. Step 4: Simplify right side
   1,100.91x = 916,955.41
5. Step 5: Solve for x
   x = 916,955.41/1,100.91
6. Step 6: Final answer
   x = 832.91