Finding the Fourth Proportional to 1,386.49, 1,913.55 and 797.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.49 : 1,913.55 = 797.02 : x
2. Step 2: Convert to fraction form
   1,386.49/1,913.55 = 797.02/x
3. Step 3: Cross multiply
   1,386.49x = 1,913.55 × 797.02
4. Step 4: Simplify right side
   1,386.49x = 1,525,137.62
5. Step 5: Solve for x
   x = 1,525,137.62/1,386.49
6. Step 6: Final answer
   x = 1,100.00