Finding the Fourth Proportional to 1,760.78, 2,427.10 and 1,339.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.78 : 2,427.10 = 1,339.79 : x
2. Step 2: Convert to fraction form
   1,760.78/2,427.10 = 1,339.79/x
3. Step 3: Cross multiply
   1,760.78x = 2,427.10 × 1,339.79
4. Step 4: Simplify right side
   1,760.78x = 3,251,788.82
5. Step 5: Solve for x
   x = 3,251,788.82/1,760.78
6. Step 6: Final answer
   x = 1,846.79