Finding the Fourth Proportional to 1,080.83, 1,620.53 and 533.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.83 : 1,620.53 = 533.37 : x
2. Step 2: Convert to fraction form
   1,080.83/1,620.53 = 533.37/x
3. Step 3: Cross multiply
   1,080.83x = 1,620.53 × 533.37
4. Step 4: Simplify right side
   1,080.83x = 864,339.42
5. Step 5: Solve for x
   x = 864,339.42/1,080.83
6. Step 6: Final answer
   x = 799.70