Finding the Fourth Proportional to 1,321.83, 1,821.62 and 967.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.83 : 1,821.62 = 967.86 : x
2. Step 2: Convert to fraction form
   1,321.83/1,821.62 = 967.86/x
3. Step 3: Cross multiply
   1,321.83x = 1,821.62 × 967.86
4. Step 4: Simplify right side
   1,321.83x = 1,763,075.12
5. Step 5: Solve for x
   x = 1,763,075.12/1,321.83
6. Step 6: Final answer
   x = 1,333.81