Finding the Fourth Proportional to 2,200.32, 3,301.83 and 1,215.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.32 : 3,301.83 = 1,215.09 : x
2. Step 2: Convert to fraction form
   2,200.32/3,301.83 = 1,215.09/x
3. Step 3: Cross multiply
   2,200.32x = 3,301.83 × 1,215.09
4. Step 4: Simplify right side
   2,200.32x = 4,012,020.61
5. Step 5: Solve for x
   x = 4,012,020.61/2,200.32
6. Step 6: Final answer
   x = 1,823.38