Finding the Fourth Proportional to 1,100.62, 1,518.89 and 603.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.62 : 1,518.89 = 603.28 : x
2. Step 2: Convert to fraction form
   1,100.62/1,518.89 = 603.28/x
3. Step 3: Cross multiply
   1,100.62x = 1,518.89 × 603.28
4. Step 4: Simplify right side
   1,100.62x = 916,314.84
5. Step 5: Solve for x
   x = 916,314.84/1,100.62
6. Step 6: Final answer
   x = 832.54