Finding the Fourth Proportional to 1,634.72, 2,256.40 and 936.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,634.72 : 2,256.40 = 936.56 : x
2. Step 2: Convert to fraction form
   1,634.72/2,256.40 = 936.56/x
3. Step 3: Cross multiply
   1,634.72x = 2,256.40 × 936.56
4. Step 4: Simplify right side
   1,634.72x = 2,113,253.98
5. Step 5: Solve for x
   x = 2,113,253.98/1,634.72
6. Step 6: Final answer
   x = 1,292.73