Finding the Fourth Proportional to 2,380.89, 3,287.25 and 1,485

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.89 : 3,287.25 = 1,485 : x
2. Step 2: Convert to fraction form
   2,380.89/3,287.25 = 1,485/x
3. Step 3: Cross multiply
   2,380.89x = 3,287.25 × 1,485
4. Step 4: Simplify right side
   2,380.89x = 4,881,566.25
5. Step 5: Solve for x
   x = 4,881,566.25/2,380.89
6. Step 6: Final answer
   x = 2,050.31