Finding the Fourth Proportional to 1,418.72, 1,957.80 and 797.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.72 : 1,957.80 = 797.84 : x
2. Step 2: Convert to fraction form
   1,418.72/1,957.80 = 797.84/x
3. Step 3: Cross multiply
   1,418.72x = 1,957.80 × 797.84
4. Step 4: Simplify right side
   1,418.72x = 1,562,011.15
5. Step 5: Solve for x
   x = 1,562,011.15/1,418.72
6. Step 6: Final answer
   x = 1,101.00