Finding the Fourth Proportional to 3,420.83, 5,131.52 and 955.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,420.83 : 5,131.52 = 955.67 : x
2. Step 2: Convert to fraction form
   3,420.83/5,131.52 = 955.67/x
3. Step 3: Cross multiply
   3,420.83x = 5,131.52 × 955.67
4. Step 4: Simplify right side
   3,420.83x = 4,904,009.28
5. Step 5: Solve for x
   x = 4,904,009.28/3,420.83
6. Step 6: Final answer
   x = 1,433.58