Finding the Fourth Proportional to 1,978.36, 2,963.85 and 1,775.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.36 : 2,963.85 = 1,775.50 : x
2. Step 2: Convert to fraction form
   1,978.36/2,963.85 = 1,775.50/x
3. Step 3: Cross multiply
   1,978.36x = 2,963.85 × 1,775.50
4. Step 4: Simplify right side
   1,978.36x = 5,262,315.68
5. Step 5: Solve for x
   x = 5,262,315.68/1,978.36
6. Step 6: Final answer
   x = 2,659.94