Finding the Fourth Proportional to 2,811.67, 4,214.45 and 1,423.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,811.67 : 4,214.45 = 1,423.10 : x
2. Step 2: Convert to fraction form
   2,811.67/4,214.45 = 1,423.10/x
3. Step 3: Cross multiply
   2,811.67x = 4,214.45 × 1,423.10
4. Step 4: Simplify right side
   2,811.67x = 5,997,597.89
5. Step 5: Solve for x
   x = 5,997,597.89/2,811.67
6. Step 6: Final answer
   x = 2,133.11