Finding the Fourth Proportional to 1,181.69, 1,771.50 and 450.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.69 : 1,771.50 = 450.77 : x
2. Step 2: Convert to fraction form
   1,181.69/1,771.50 = 450.77/x
3. Step 3: Cross multiply
   1,181.69x = 1,771.50 × 450.77
4. Step 4: Simplify right side
   1,181.69x = 798,531.89
5. Step 5: Solve for x
   x = 798,531.89/1,181.69
6. Step 6: Final answer
   x = 675.75