Finding the Fourth Proportional to 2,231.87, 3,080.43 and 1,485.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.87 : 3,080.43 = 1,485.86 : x
2. Step 2: Convert to fraction form
   2,231.87/3,080.43 = 1,485.86/x
3. Step 3: Cross multiply
   2,231.87x = 3,080.43 × 1,485.86
4. Step 4: Simplify right side
   2,231.87x = 4,577,072.32
5. Step 5: Solve for x
   x = 4,577,072.32/2,231.87
6. Step 6: Final answer
   x = 2,050.78