Finding the Fourth Proportional to 2,087.68, 2,894.18 and 1,976.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.68 : 2,894.18 = 1,976.71 : x
2. Step 2: Convert to fraction form
   2,087.68/2,894.18 = 1,976.71/x
3. Step 3: Cross multiply
   2,087.68x = 2,894.18 × 1,976.71
4. Step 4: Simplify right side
   2,087.68x = 5,720,954.55
5. Step 5: Solve for x
   x = 5,720,954.55/2,087.68
6. Step 6: Final answer
   x = 2,740.34