Finding the Fourth Proportional to 2,011.81, 3,014.47 and 1,087.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.81 : 3,014.47 = 1,087.80 : x
2. Step 2: Convert to fraction form
   2,011.81/3,014.47 = 1,087.80/x
3. Step 3: Cross multiply
   2,011.81x = 3,014.47 × 1,087.80
4. Step 4: Simplify right side
   2,011.81x = 3,279,156.72
5. Step 5: Solve for x
   x = 3,279,156.72/2,011.81
6. Step 6: Final answer
   x = 1,629.95