Finding the Fourth Proportional to 1,212.54, 1,672.83 and 745.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212.54 : 1,672.83 = 745.98 : x
2. Step 2: Convert to fraction form
   1,212.54/1,672.83 = 745.98/x
3. Step 3: Cross multiply
   1,212.54x = 1,672.83 × 745.98
4. Step 4: Simplify right side
   1,212.54x = 1,247,897.72
5. Step 5: Solve for x
   x = 1,247,897.72/1,212.54
6. Step 6: Final answer
   x = 1,029.16