Finding the Fourth Proportional to 1,118.51, 1,543.61 and 676.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.51 : 1,543.61 = 676.45 : x
2. Step 2: Convert to fraction form
   1,118.51/1,543.61 = 676.45/x
3. Step 3: Cross multiply
   1,118.51x = 1,543.61 × 676.45
4. Step 4: Simplify right side
   1,118.51x = 1,044,174.80
5. Step 5: Solve for x
   x = 1,044,174.80/1,118.51
6. Step 6: Final answer
   x = 933.54