Finding the Fourth Proportional to 1,323.47, 1,983.59 and 774.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.47 : 1,983.59 = 774.50 : x
2. Step 2: Convert to fraction form
   1,323.47/1,983.59 = 774.50/x
3. Step 3: Cross multiply
   1,323.47x = 1,983.59 × 774.50
4. Step 4: Simplify right side
   1,323.47x = 1,536,279.57
5. Step 5: Solve for x
   x = 1,536,279.57/1,323.47
6. Step 6: Final answer
   x = 1,160.79