Finding the Fourth Proportional to 1,007.86, 1,389.93 and 795.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007.86 : 1,389.93 = 795.31 : x
2. Step 2: Convert to fraction form
   1,007.86/1,389.93 = 795.31/x
3. Step 3: Cross multiply
   1,007.86x = 1,389.93 × 795.31
4. Step 4: Simplify right side
   1,007.86x = 1,105,425.23
5. Step 5: Solve for x
   x = 1,105,425.23/1,007.86
6. Step 6: Final answer
   x = 1,096.80