Finding the Fourth Proportional to 1,288.25, 1,926.89 and 793.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.25 : 1,926.89 = 793.43 : x
2. Step 2: Convert to fraction form
   1,288.25/1,926.89 = 793.43/x
3. Step 3: Cross multiply
   1,288.25x = 1,926.89 × 793.43
4. Step 4: Simplify right side
   1,288.25x = 1,528,848.37
5. Step 5: Solve for x
   x = 1,528,848.37/1,288.25
6. Step 6: Final answer
   x = 1,186.76