Finding the Fourth Proportional to 2,421.53, 3,340.71 and 1,581.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.53 : 3,340.71 = 1,581.94 : x
2. Step 2: Convert to fraction form
   2,421.53/3,340.71 = 1,581.94/x
3. Step 3: Cross multiply
   2,421.53x = 3,340.71 × 1,581.94
4. Step 4: Simplify right side
   2,421.53x = 5,284,802.78
5. Step 5: Solve for x
   x = 5,284,802.78/2,421.53
6. Step 6: Final answer
   x = 2,182.42