Finding the Fourth Proportional to 1,334.27, 2,011.57 and 1,240.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.27 : 2,011.57 = 1,240.31 : x
2. Step 2: Convert to fraction form
   1,334.27/2,011.57 = 1,240.31/x
3. Step 3: Cross multiply
   1,334.27x = 2,011.57 × 1,240.31
4. Step 4: Simplify right side
   1,334.27x = 2,494,970.39
5. Step 5: Solve for x
   x = 2,494,970.39/1,334.27
6. Step 6: Final answer
   x = 1,869.91