Finding the Fourth Proportional to 3,291.22, 4,933.89 and 1,210.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,291.22 : 4,933.89 = 1,210.72 : x
2. Step 2: Convert to fraction form
   3,291.22/4,933.89 = 1,210.72/x
3. Step 3: Cross multiply
   3,291.22x = 4,933.89 × 1,210.72
4. Step 4: Simplify right side
   3,291.22x = 5,973,546.97
5. Step 5: Solve for x
   x = 5,973,546.97/3,291.22
6. Step 6: Final answer
   x = 1,815.00