Finding the Fourth Proportional to 2,074.60, 3,109.44 and 1,100.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.60 : 3,109.44 = 1,100.20 : x
2. Step 2: Convert to fraction form
   2,074.60/3,109.44 = 1,100.20/x
3. Step 3: Cross multiply
   2,074.60x = 3,109.44 × 1,100.20
4. Step 4: Simplify right side
   2,074.60x = 3,421,005.89
5. Step 5: Solve for x
   x = 3,421,005.89/2,074.60
6. Step 6: Final answer
   x = 1,649.00