Finding the Fourth Proportional to 1,511.73, 2,268.25 and 781.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.73 : 2,268.25 = 781.82 : x
2. Step 2: Convert to fraction form
   1,511.73/2,268.25 = 781.82/x
3. Step 3: Cross multiply
   1,511.73x = 2,268.25 × 781.82
4. Step 4: Simplify right side
   1,511.73x = 1,773,359.31
5. Step 5: Solve for x
   x = 1,773,359.31/1,511.73
6. Step 6: Final answer
   x = 1,173.07