Finding the Fourth Proportional to 1,111.59, 1,666.17 and 533.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.59 : 1,666.17 = 533.25 : x
2. Step 2: Convert to fraction form
   1,111.59/1,666.17 = 533.25/x
3. Step 3: Cross multiply
   1,111.59x = 1,666.17 × 533.25
4. Step 4: Simplify right side
   1,111.59x = 888,485.15
5. Step 5: Solve for x
   x = 888,485.15/1,111.59
6. Step 6: Final answer
   x = 799.29