Finding the Fourth Proportional to 1,111.32, 1,668.06 and 805.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.32 : 1,668.06 = 805.14 : x
2. Step 2: Convert to fraction form
   1,111.32/1,668.06 = 805.14/x
3. Step 3: Cross multiply
   1,111.32x = 1,668.06 × 805.14
4. Step 4: Simplify right side
   1,111.32x = 1,343,021.83
5. Step 5: Solve for x
   x = 1,343,021.83/1,111.32
6. Step 6: Final answer
   x = 1,208.49