Finding the Fourth Proportional to 1,271.89, 1,755.12 and 704.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.89 : 1,755.12 = 704.69 : x
2. Step 2: Convert to fraction form
   1,271.89/1,755.12 = 704.69/x
3. Step 3: Cross multiply
   1,271.89x = 1,755.12 × 704.69
4. Step 4: Simplify right side
   1,271.89x = 1,236,813.77
5. Step 5: Solve for x
   x = 1,236,813.77/1,271.89
6. Step 6: Final answer
   x = 972.42