Finding the Fourth Proportional to 1,363.46, 1,881.39 and 773.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.46 : 1,881.39 = 773.88 : x
2. Step 2: Convert to fraction form
   1,363.46/1,881.39 = 773.88/x
3. Step 3: Cross multiply
   1,363.46x = 1,881.39 × 773.88
4. Step 4: Simplify right side
   1,363.46x = 1,455,976.18
5. Step 5: Solve for x
   x = 1,455,976.18/1,363.46
6. Step 6: Final answer
   x = 1,067.85