Finding the Fourth Proportional to 1,359.41, 2,036.67 and 773.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.41 : 2,036.67 = 773.78 : x
2. Step 2: Convert to fraction form
   1,359.41/2,036.67 = 773.78/x
3. Step 3: Cross multiply
   1,359.41x = 2,036.67 × 773.78
4. Step 4: Simplify right side
   1,359.41x = 1,575,924.33
5. Step 5: Solve for x
   x = 1,575,924.33/1,359.41
6. Step 6: Final answer
   x = 1,159.28