Finding the Fourth Proportional to 1,271.34, 1,905.12 and 923.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.34 : 1,905.12 = 923.82 : x
2. Step 2: Convert to fraction form
   1,271.34/1,905.12 = 923.82/x
3. Step 3: Cross multiply
   1,271.34x = 1,905.12 × 923.82
4. Step 4: Simplify right side
   1,271.34x = 1,759,987.96
5. Step 5: Solve for x
   x = 1,759,987.96/1,271.34
6. Step 6: Final answer
   x = 1,384.36