Finding the Fourth Proportional to 2,253.06, 3,109.78 and 1,369.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.06 : 3,109.78 = 1,369.45 : x
2. Step 2: Convert to fraction form
   2,253.06/3,109.78 = 1,369.45/x
3. Step 3: Cross multiply
   2,253.06x = 3,109.78 × 1,369.45
4. Step 4: Simplify right side
   2,253.06x = 4,258,693.82
5. Step 5: Solve for x
   x = 4,258,693.82/2,253.06
6. Step 6: Final answer
   x = 1,890.18