Finding the Fourth Proportional to 2,861.96, 4,294.55 and 1,218.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861.96 : 4,294.55 = 1,218.33 : x
2. Step 2: Convert to fraction form
   2,861.96/4,294.55 = 1,218.33/x
3. Step 3: Cross multiply
   2,861.96x = 4,294.55 × 1,218.33
4. Step 4: Simplify right side
   2,861.96x = 5,232,182.15
5. Step 5: Solve for x
   x = 5,232,182.15/2,861.96
6. Step 6: Final answer
   x = 1,828.18