Finding the Fourth Proportional to 2,509.33, 3,764.12 and 1,211.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,509.33 : 3,764.12 = 1,211.89 : x
2. Step 2: Convert to fraction form
   2,509.33/3,764.12 = 1,211.89/x
3. Step 3: Cross multiply
   2,509.33x = 3,764.12 × 1,211.89
4. Step 4: Simplify right side
   2,509.33x = 4,561,693.33
5. Step 5: Solve for x
   x = 4,561,693.33/2,509.33
6. Step 6: Final answer
   x = 1,817.89