Finding the Fourth Proportional to 1,395.93, 1,926.39 and 766.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.93 : 1,926.39 = 766.51 : x
2. Step 2: Convert to fraction form
   1,395.93/1,926.39 = 766.51/x
3. Step 3: Cross multiply
   1,395.93x = 1,926.39 × 766.51
4. Step 4: Simplify right side
   1,395.93x = 1,476,593.37
5. Step 5: Solve for x
   x = 1,476,593.37/1,395.93
6. Step 6: Final answer
   x = 1,057.78