Finding the Fourth Proportional to 2,087.76, 2,880.81 and 1,156.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.76 : 2,880.81 = 1,156.26 : x
2. Step 2: Convert to fraction form
   2,087.76/2,880.81 = 1,156.26/x
3. Step 3: Cross multiply
   2,087.76x = 2,880.81 × 1,156.26
4. Step 4: Simplify right side
   2,087.76x = 3,330,965.37
5. Step 5: Solve for x
   x = 3,330,965.37/2,087.76
6. Step 6: Final answer
   x = 1,595.47