Finding the Fourth Proportional to 1,760.13, 2,426.54 and 1,261.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.13 : 2,426.54 = 1,261.89 : x
2. Step 2: Convert to fraction form
   1,760.13/2,426.54 = 1,261.89/x
3. Step 3: Cross multiply
   1,760.13x = 2,426.54 × 1,261.89
4. Step 4: Simplify right side
   1,760.13x = 3,062,020.25
5. Step 5: Solve for x
   x = 3,062,020.25/1,760.13
6. Step 6: Final answer
   x = 1,739.66