Finding the Fourth Proportional to 2,109.76, 3,165.96 and 1,459.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.76 : 3,165.96 = 1,459.28 : x
2. Step 2: Convert to fraction form
   2,109.76/3,165.96 = 1,459.28/x
3. Step 3: Cross multiply
   2,109.76x = 3,165.96 × 1,459.28
4. Step 4: Simplify right side
   2,109.76x = 4,620,022.11
5. Step 5: Solve for x
   x = 4,620,022.11/2,109.76
6. Step 6: Final answer
   x = 2,189.83