Finding the Fourth Proportional to 2,421.69, 3,633.44 and 1,381.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.69 : 3,633.44 = 1,381.05 : x
2. Step 2: Convert to fraction form
   2,421.69/3,633.44 = 1,381.05/x
3. Step 3: Cross multiply
   2,421.69x = 3,633.44 × 1,381.05
4. Step 4: Simplify right side
   2,421.69x = 5,017,955.41
5. Step 5: Solve for x
   x = 5,017,955.41/2,421.69
6. Step 6: Final answer
   x = 2,072.09