Finding the Fourth Proportional to 1,342.61, 1,852.78 and 745.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.61 : 1,852.78 = 745.09 : x
2. Step 2: Convert to fraction form
   1,342.61/1,852.78 = 745.09/x
3. Step 3: Cross multiply
   1,342.61x = 1,852.78 × 745.09
4. Step 4: Simplify right side
   1,342.61x = 1,380,474.86
5. Step 5: Solve for x
   x = 1,380,474.86/1,342.61
6. Step 6: Final answer
   x = 1,028.20