Finding the Fourth Proportional to 1,271.79, 1,755.45 and 740.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.79 : 1,755.45 = 740.82 : x
2. Step 2: Convert to fraction form
   1,271.79/1,755.45 = 740.82/x
3. Step 3: Cross multiply
   1,271.79x = 1,755.45 × 740.82
4. Step 4: Simplify right side
   1,271.79x = 1,300,472.47
5. Step 5: Solve for x
   x = 1,300,472.47/1,271.79
6. Step 6: Final answer
   x = 1,022.55