Finding the Fourth Proportional to 2,109.83, 2,911.46 and 1,225.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.83 : 2,911.46 = 1,225.49 : x
2. Step 2: Convert to fraction form
   2,109.83/2,911.46 = 1,225.49/x
3. Step 3: Cross multiply
   2,109.83x = 2,911.46 × 1,225.49
4. Step 4: Simplify right side
   2,109.83x = 3,567,944.43
5. Step 5: Solve for x
   x = 3,567,944.43/2,109.83
6. Step 6: Final answer
   x = 1,691.11