Finding the Fourth Proportional to 1,275.01, 1,760.72 and 1,205.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,275.01 : 1,760.72 = 1,205.98 : x
2. Step 2: Convert to fraction form
   1,275.01/1,760.72 = 1,205.98/x
3. Step 3: Cross multiply
   1,275.01x = 1,760.72 × 1,205.98
4. Step 4: Simplify right side
   1,275.01x = 2,123,382.67
5. Step 5: Solve for x
   x = 2,123,382.67/1,275.01
6. Step 6: Final answer
   x = 1,665.39