Finding the Fourth Proportional to 2,448.05, 3,672.06 and 1,215.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,448.05 : 3,672.06 = 1,215.13 : x
2. Step 2: Convert to fraction form
   2,448.05/3,672.06 = 1,215.13/x
3. Step 3: Cross multiply
   2,448.05x = 3,672.06 × 1,215.13
4. Step 4: Simplify right side
   2,448.05x = 4,462,030.27
5. Step 5: Solve for x
   x = 4,462,030.27/2,448.05
6. Step 6: Final answer
   x = 1,822.69