Finding the Fourth Proportional to 1,181.86, 1,773.34 and 451.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.86 : 1,773.34 = 451.19 : x
2. Step 2: Convert to fraction form
   1,181.86/1,773.34 = 451.19/x
3. Step 3: Cross multiply
   1,181.86x = 1,773.34 × 451.19
4. Step 4: Simplify right side
   1,181.86x = 800,116.58
5. Step 5: Solve for x
   x = 800,116.58/1,181.86
6. Step 6: Final answer
   x = 677.00