Finding the Fourth Proportional to 1,111.86, 1,665.90 and 533.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.86 : 1,665.90 = 533.52 : x
2. Step 2: Convert to fraction form
   1,111.86/1,665.90 = 533.52/x
3. Step 3: Cross multiply
   1,111.86x = 1,665.90 × 533.52
4. Step 4: Simplify right side
   1,111.86x = 888,790.97
5. Step 5: Solve for x
   x = 888,790.97/1,111.86
6. Step 6: Final answer
   x = 799.37