Finding the Fourth Proportional to 2,253.47, 3,109.71 and 1,309.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.47 : 3,109.71 = 1,309.34 : x
2. Step 2: Convert to fraction form
   2,253.47/3,109.71 = 1,309.34/x
3. Step 3: Cross multiply
   2,253.47x = 3,109.71 × 1,309.34
4. Step 4: Simplify right side
   2,253.47x = 4,071,652.14
5. Step 5: Solve for x
   x = 4,071,652.14/2,253.47
6. Step 6: Final answer
   x = 1,806.84