Finding the Fourth Proportional to 1,200.50, 1,656.72 and 676.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.50 : 1,656.72 = 676.53 : x
2. Step 2: Convert to fraction form
   1,200.50/1,656.72 = 676.53/x
3. Step 3: Cross multiply
   1,200.50x = 1,656.72 × 676.53
4. Step 4: Simplify right side
   1,200.50x = 1,120,817.40
5. Step 5: Solve for x
   x = 1,120,817.40/1,200.50
6. Step 6: Final answer
   x = 933.63