Finding the Fourth Proportional to 1,236.25, 1,706.04 and 676.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236.25 : 1,706.04 = 676.72 : x
2. Step 2: Convert to fraction form
   1,236.25/1,706.04 = 676.72/x
3. Step 3: Cross multiply
   1,236.25x = 1,706.04 × 676.72
4. Step 4: Simplify right side
   1,236.25x = 1,154,502.86
5. Step 5: Solve for x
   x = 1,154,502.86/1,236.25
6. Step 6: Final answer
   x = 933.88