Finding the Fourth Proportional to 1,363.31, 1,881.31 and 773.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.31 : 1,881.31 = 773.88 : x
2. Step 2: Convert to fraction form
   1,363.31/1,881.31 = 773.88/x
3. Step 3: Cross multiply
   1,363.31x = 1,881.31 × 773.88
4. Step 4: Simplify right side
   1,363.31x = 1,455,906.25
5. Step 5: Solve for x
   x = 1,455,906.25/1,363.31
6. Step 6: Final answer
   x = 1,067.92