Finding the Fourth Proportional to 2,112.33, 2,913.45 and 1,365.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.33 : 2,913.45 = 1,365.72 : x
2. Step 2: Convert to fraction form
   2,112.33/2,913.45 = 1,365.72/x
3. Step 3: Cross multiply
   2,112.33x = 2,913.45 × 1,365.72
4. Step 4: Simplify right side
   2,112.33x = 3,978,956.93
5. Step 5: Solve for x
   x = 3,978,956.93/2,112.33
6. Step 6: Final answer
   x = 1,883.68