Finding the Fourth Proportional to 2,421.33, 3,628.54 and 1,379.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.33 : 3,628.54 = 1,379.18 : x
2. Step 2: Convert to fraction form
   2,421.33/3,628.54 = 1,379.18/x
3. Step 3: Cross multiply
   2,421.33x = 3,628.54 × 1,379.18
4. Step 4: Simplify right side
   2,421.33x = 5,004,402.90
5. Step 5: Solve for x
   x = 5,004,402.90/2,421.33
6. Step 6: Final answer
   x = 2,066.80