Finding the Fourth Proportional to 2,196.21, 3,030.79 and 1,356.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.21 : 3,030.79 = 1,356.72 : x
2. Step 2: Convert to fraction form
   2,196.21/3,030.79 = 1,356.72/x
3. Step 3: Cross multiply
   2,196.21x = 3,030.79 × 1,356.72
4. Step 4: Simplify right side
   2,196.21x = 4,111,950.58
5. Step 5: Solve for x
   x = 4,111,950.58/2,196.21
6. Step 6: Final answer
   x = 1,872.29