Finding the Fourth Proportional to 1,200.39, 1,656.25 and 676.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.39 : 1,656.25 = 676.42 : x
2. Step 2: Convert to fraction form
   1,200.39/1,656.25 = 676.42/x
3. Step 3: Cross multiply
   1,200.39x = 1,656.25 × 676.42
4. Step 4: Simplify right side
   1,200.39x = 1,120,314.79
5. Step 5: Solve for x
   x = 1,120,314.79/1,200.39
6. Step 6: Final answer
   x = 933.30