Finding the Fourth Proportional to 3,402.76, 5,100.88 and 2,087.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,402.76 : 5,100.88 = 2,087.32 : x
2. Step 2: Convert to fraction form
   3,402.76/5,100.88 = 2,087.32/x
3. Step 3: Cross multiply
   3,402.76x = 5,100.88 × 2,087.32
4. Step 4: Simplify right side
   3,402.76x = 10,647,168.84
5. Step 5: Solve for x
   x = 10,647,168.84/3,402.76
6. Step 6: Final answer
   x = 3,128.98