Finding the Fourth Proportional to 2,253.42, 3,109.88 and 1,309.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.42 : 3,109.88 = 1,309.46 : x
2. Step 2: Convert to fraction form
   2,253.42/3,109.88 = 1,309.46/x
3. Step 3: Cross multiply
   2,253.42x = 3,109.88 × 1,309.46
4. Step 4: Simplify right side
   2,253.42x = 4,072,263.46
5. Step 5: Solve for x
   x = 4,072,263.46/2,253.42
6. Step 6: Final answer
   x = 1,807.15