Finding the Fourth Proportional to 1,118.59, 1,543.83 and 676.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.59 : 1,543.83 = 676.55 : x
2. Step 2: Convert to fraction form
   1,118.59/1,543.83 = 676.55/x
3. Step 3: Cross multiply
   1,118.59x = 1,543.83 × 676.55
4. Step 4: Simplify right side
   1,118.59x = 1,044,478.19
5. Step 5: Solve for x
   x = 1,044,478.19/1,118.59
6. Step 6: Final answer
   x = 933.75