Finding the Fourth Proportional to 1,100.55, 1,650.28 and 544.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.55 : 1,650.28 = 544.61 : x
2. Step 2: Convert to fraction form
   1,100.55/1,650.28 = 544.61/x
3. Step 3: Cross multiply
   1,100.55x = 1,650.28 × 544.61
4. Step 4: Simplify right side
   1,100.55x = 898,759.12
5. Step 5: Solve for x
   x = 898,759.12/1,100.55
6. Step 6: Final answer
   x = 816.65