Finding the Fourth Proportional to 1,181.32, 1,772.72 and 451.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.32 : 1,772.72 = 451.52 : x
2. Step 2: Convert to fraction form
   1,181.32/1,772.72 = 451.52/x
3. Step 3: Cross multiply
   1,181.32x = 1,772.72 × 451.52
4. Step 4: Simplify right side
   1,181.32x = 800,418.53
5. Step 5: Solve for x
   x = 800,418.53/1,181.32
6. Step 6: Final answer
   x = 677.56