Finding the Fourth Proportional to 3,015.86, 4,159.91 and 1,820.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,015.86 : 4,159.91 = 1,820.03 : x
2. Step 2: Convert to fraction form
   3,015.86/4,159.91 = 1,820.03/x
3. Step 3: Cross multiply
   3,015.86x = 4,159.91 × 1,820.03
4. Step 4: Simplify right side
   3,015.86x = 7,571,162.30
5. Step 5: Solve for x
   x = 7,571,162.30/3,015.86
6. Step 6: Final answer
   x = 2,510.45