Finding the Fourth Proportional to 1,387.38, 1,914.59 and 797.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,387.38 : 1,914.59 = 797.95 : x
2. Step 2: Convert to fraction form
   1,387.38/1,914.59 = 797.95/x
3. Step 3: Cross multiply
   1,387.38x = 1,914.59 × 797.95
4. Step 4: Simplify right side
   1,387.38x = 1,527,747.09
5. Step 5: Solve for x
   x = 1,527,747.09/1,387.38
6. Step 6: Final answer
   x = 1,101.17