Finding the Fourth Proportional to 2,113.50, 3,171.34 and 943.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.50 : 3,171.34 = 943.86 : x
2. Step 2: Convert to fraction form
   2,113.50/3,171.34 = 943.86/x
3. Step 3: Cross multiply
   2,113.50x = 3,171.34 × 943.86
4. Step 4: Simplify right side
   2,113.50x = 2,993,300.97
5. Step 5: Solve for x
   x = 2,993,300.97/2,113.50
6. Step 6: Final answer
   x = 1,416.28