Finding the Fourth Proportional to 1,200.56, 1,656.75 and 676.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.56 : 1,656.75 = 676.59 : x
2. Step 2: Convert to fraction form
   1,200.56/1,656.75 = 676.59/x
3. Step 3: Cross multiply
   1,200.56x = 1,656.75 × 676.59
4. Step 4: Simplify right side
   1,200.56x = 1,120,940.48
5. Step 5: Solve for x
   x = 1,120,940.48/1,200.56
6. Step 6: Final answer
   x = 933.68