Finding the Fourth Proportional to 1,271.15, 1,755.86 and 975.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.15 : 1,755.86 = 975.91 : x
2. Step 2: Convert to fraction form
   1,271.15/1,755.86 = 975.91/x
3. Step 3: Cross multiply
   1,271.15x = 1,755.86 × 975.91
4. Step 4: Simplify right side
   1,271.15x = 1,713,561.33
5. Step 5: Solve for x
   x = 1,713,561.33/1,271.15
6. Step 6: Final answer
   x = 1,348.04