Finding the Fourth Proportional to 2,253.39, 3,109.86 and 1,309.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.39 : 3,109.86 = 1,309.48 : x
2. Step 2: Convert to fraction form
   2,253.39/3,109.86 = 1,309.48/x
3. Step 3: Cross multiply
   2,253.39x = 3,109.86 × 1,309.48
4. Step 4: Simplify right side
   2,253.39x = 4,072,299.47
5. Step 5: Solve for x
   x = 4,072,299.47/2,253.39
6. Step 6: Final answer
   x = 1,807.19