Finding the Fourth Proportional to 1,926.36, 2,662.61 and 1,778.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.36 : 2,662.61 = 1,778.76 : x
2. Step 2: Convert to fraction form
   1,926.36/2,662.61 = 1,778.76/x
3. Step 3: Cross multiply
   1,926.36x = 2,662.61 × 1,778.76
4. Step 4: Simplify right side
   1,926.36x = 4,736,135.27
5. Step 5: Solve for x
   x = 4,736,135.27/1,926.36
6. Step 6: Final answer
   x = 2,458.59