Finding the Fourth Proportional to 2,087.59, 2,880.88 and 1,156.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.59 : 2,880.88 = 1,156.09 : x
2. Step 2: Convert to fraction form
   2,087.59/2,880.88 = 1,156.09/x
3. Step 3: Cross multiply
   2,087.59x = 2,880.88 × 1,156.09
4. Step 4: Simplify right side
   2,087.59x = 3,330,556.56
5. Step 5: Solve for x
   x = 3,330,556.56/2,087.59
6. Step 6: Final answer
   x = 1,595.41