Finding the Fourth Proportional to 2,753.06, 4,128.60 and 1,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,753.06 : 4,128.60 = 1,109.30 : x
2. Step 2: Convert to fraction form
   2,753.06/4,128.60 = 1,109.30/x
3. Step 3: Cross multiply
   2,753.06x = 4,128.60 × 1,109.30
4. Step 4: Simplify right side
   2,753.06x = 4,579,855.98
5. Step 5: Solve for x
   x = 4,579,855.98/2,753.06
6. Step 6: Final answer
   x = 1,663.55