Finding the Fourth Proportional to 3,087.98, 4,627.86 and 1,138.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,087.98 : 4,627.86 = 1,138.34 : x
2. Step 2: Convert to fraction form
   3,087.98/4,627.86 = 1,138.34/x
3. Step 3: Cross multiply
   3,087.98x = 4,627.86 × 1,138.34
4. Step 4: Simplify right side
   3,087.98x = 5,268,078.15
5. Step 5: Solve for x
   x = 5,268,078.15/3,087.98
6. Step 6: Final answer
   x = 1,705.99