Finding the Fourth Proportional to 1,342.86, 1,853.21 and 745.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.86 : 1,853.21 = 745.41 : x
2. Step 2: Convert to fraction form
   1,342.86/1,853.21 = 745.41/x
3. Step 3: Cross multiply
   1,342.86x = 1,853.21 × 745.41
4. Step 4: Simplify right side
   1,342.86x = 1,381,401.27
5. Step 5: Solve for x
   x = 1,381,401.27/1,342.86
6. Step 6: Final answer
   x = 1,028.70