Finding the Fourth Proportional to 1,400.68, 1,932.96 and 811.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.68 : 1,932.96 = 811.18 : x
2. Step 2: Convert to fraction form
   1,400.68/1,932.96 = 811.18/x
3. Step 3: Cross multiply
   1,400.68x = 1,932.96 × 811.18
4. Step 4: Simplify right side
   1,400.68x = 1,567,978.49
5. Step 5: Solve for x
   x = 1,567,978.49/1,400.68
6. Step 6: Final answer
   x = 1,119.44