Finding the Fourth Proportional to 2,087.48, 3,129.16 and 1,199.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.48 : 3,129.16 = 1,199.18 : x
2. Step 2: Convert to fraction form
   2,087.48/3,129.16 = 1,199.18/x
3. Step 3: Cross multiply
   2,087.48x = 3,129.16 × 1,199.18
4. Step 4: Simplify right side
   2,087.48x = 3,752,426.09
5. Step 5: Solve for x
   x = 3,752,426.09/2,087.48
6. Step 6: Final answer
   x = 1,797.59