Finding the Fourth Proportional to 1,112.89, 1,536.06 and 671.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.89 : 1,536.06 = 671.09 : x
2. Step 2: Convert to fraction form
   1,112.89/1,536.06 = 671.09/x
3. Step 3: Cross multiply
   1,112.89x = 1,536.06 × 671.09
4. Step 4: Simplify right side
   1,112.89x = 1,030,829.34
5. Step 5: Solve for x
   x = 1,030,829.34/1,112.89
6. Step 6: Final answer
   x = 926.26