Finding the Fourth Proportional to 1,300.86, 1,795.22 and 777.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.86 : 1,795.22 = 777.19 : x
2. Step 2: Convert to fraction form
   1,300.86/1,795.22 = 777.19/x
3. Step 3: Cross multiply
   1,300.86x = 1,795.22 × 777.19
4. Step 4: Simplify right side
   1,300.86x = 1,395,227.03
5. Step 5: Solve for x
   x = 1,395,227.03/1,300.86
6. Step 6: Final answer
   x = 1,072.54