Finding the Fourth Proportional to 1,873.69, 2,585.27 and 1,087.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,873.69 : 2,585.27 = 1,087.28 : x
2. Step 2: Convert to fraction form
   1,873.69/2,585.27 = 1,087.28/x
3. Step 3: Cross multiply
   1,873.69x = 2,585.27 × 1,087.28
4. Step 4: Simplify right side
   1,873.69x = 2,810,906.93
5. Step 5: Solve for x
   x = 2,810,906.93/1,873.69
6. Step 6: Final answer
   x = 1,500.20