Finding the Fourth Proportional to 1,333.05, 1,839.60 and 773.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.05 : 1,839.60 = 773.63 : x
2. Step 2: Convert to fraction form
   1,333.05/1,839.60 = 773.63/x
3. Step 3: Cross multiply
   1,333.05x = 1,839.60 × 773.63
4. Step 4: Simplify right side
   1,333.05x = 1,423,160.55
5. Step 5: Solve for x
   x = 1,423,160.55/1,333.05
6. Step 6: Final answer
   x = 1,067.60