Finding the Fourth Proportional to 1,745.50, 2,408.59 and 999.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,745.50 : 2,408.59 = 999.42 : x
2. Step 2: Convert to fraction form
   1,745.50/2,408.59 = 999.42/x
3. Step 3: Cross multiply
   1,745.50x = 2,408.59 × 999.42
4. Step 4: Simplify right side
   1,745.50x = 2,407,178.48
5. Step 5: Solve for x
   x = 2,407,178.48/1,745.50
6. Step 6: Final answer
   x = 1,379.08