Finding the Fourth Proportional to 2,011.98, 3,015.36 and 1,087.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.98 : 3,015.36 = 1,087.86 : x
2. Step 2: Convert to fraction form
   2,011.98/3,015.36 = 1,087.86/x
3. Step 3: Cross multiply
   2,011.98x = 3,015.36 × 1,087.86
4. Step 4: Simplify right side
   2,011.98x = 3,280,289.53
5. Step 5: Solve for x
   x = 3,280,289.53/2,011.98
6. Step 6: Final answer
   x = 1,630.38