Finding the Fourth Proportional to 1,111.22, 1,666.66 and 699.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.22 : 1,666.66 = 699.09 : x
2. Step 2: Convert to fraction form
   1,111.22/1,666.66 = 699.09/x
3. Step 3: Cross multiply
   1,111.22x = 1,666.66 × 699.09
4. Step 4: Simplify right side
   1,111.22x = 1,165,145.34
5. Step 5: Solve for x
   x = 1,165,145.34/1,111.22
6. Step 6: Final answer
   x = 1,048.53