Finding the Fourth Proportional to 1,356.76, 1,872.12 and 797.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.76 : 1,872.12 = 797.10 : x
2. Step 2: Convert to fraction form
   1,356.76/1,872.12 = 797.10/x
3. Step 3: Cross multiply
   1,356.76x = 1,872.12 × 797.10
4. Step 4: Simplify right side
   1,356.76x = 1,492,266.85
5. Step 5: Solve for x
   x = 1,492,266.85/1,356.76
6. Step 6: Final answer
   x = 1,099.88