Finding the Fourth Proportional to 1,148.57, 1,585.03 and 676.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,148.57 : 1,585.03 = 676.49 : x
2. Step 2: Convert to fraction form
   1,148.57/1,585.03 = 676.49/x
3. Step 3: Cross multiply
   1,148.57x = 1,585.03 × 676.49
4. Step 4: Simplify right side
   1,148.57x = 1,072,249.02
5. Step 5: Solve for x
   x = 1,072,249.02/1,148.57
6. Step 6: Final answer
   x = 933.55