Finding the Fourth Proportional to 1,182.18, 1,773.69 and 451.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.18 : 1,773.69 = 451.98 : x
2. Step 2: Convert to fraction form
   1,182.18/1,773.69 = 451.98/x
3. Step 3: Cross multiply
   1,182.18x = 1,773.69 × 451.98
4. Step 4: Simplify right side
   1,182.18x = 801,672.41
5. Step 5: Solve for x
   x = 801,672.41/1,182.18
6. Step 6: Final answer
   x = 678.13