Finding the Fourth Proportional to 2,087.35, 3,134.27 and 1,115.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.35 : 3,134.27 = 1,115.35 : x
2. Step 2: Convert to fraction form
   2,087.35/3,134.27 = 1,115.35/x
3. Step 3: Cross multiply
   2,087.35x = 3,134.27 × 1,115.35
4. Step 4: Simplify right side
   2,087.35x = 3,495,808.04
5. Step 5: Solve for x
   x = 3,495,808.04/2,087.35
6. Step 6: Final answer
   x = 1,674.76