Finding the Fourth Proportional to 1,634.72, 2,255.86 and 926.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,634.72 : 2,255.86 = 926.56 : x
2. Step 2: Convert to fraction form
   1,634.72/2,255.86 = 926.56/x
3. Step 3: Cross multiply
   1,634.72x = 2,255.86 × 926.56
4. Step 4: Simplify right side
   1,634.72x = 2,090,189.64
5. Step 5: Solve for x
   x = 2,090,189.64/1,634.72
6. Step 6: Final answer
   x = 1,278.62