Finding the Fourth Proportional to 1,403.59, 1,936.85 and 774.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.59 : 1,936.85 = 774.08 : x
2. Step 2: Convert to fraction form
   1,403.59/1,936.85 = 774.08/x
3. Step 3: Cross multiply
   1,403.59x = 1,936.85 × 774.08
4. Step 4: Simplify right side
   1,403.59x = 1,499,267.16
5. Step 5: Solve for x
   x = 1,499,267.16/1,403.59
6. Step 6: Final answer
   x = 1,068.17