Finding the Fourth Proportional to 2,461.86, 3,690.38 and 1,581.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,461.86 : 3,690.38 = 1,581.90 : x
2. Step 2: Convert to fraction form
   2,461.86/3,690.38 = 1,581.90/x
3. Step 3: Cross multiply
   2,461.86x = 3,690.38 × 1,581.90
4. Step 4: Simplify right side
   2,461.86x = 5,837,812.12
5. Step 5: Solve for x
   x = 5,837,812.12/2,461.86
6. Step 6: Final answer
   x = 2,371.30