Finding the Fourth Proportional to 2,253.64, 3,109.50 and 1,309.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.64 : 3,109.50 = 1,309.58 : x
2. Step 2: Convert to fraction form
   2,253.64/3,109.50 = 1,309.58/x
3. Step 3: Cross multiply
   2,253.64x = 3,109.50 × 1,309.58
4. Step 4: Simplify right side
   2,253.64x = 4,072,139.01
5. Step 5: Solve for x
   x = 4,072,139.01/2,253.64
6. Step 6: Final answer
   x = 1,806.92