Finding the Fourth Proportional to 2,223.06, 3,332.51 and 1,111.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.06 : 3,332.51 = 1,111.79 : x
2. Step 2: Convert to fraction form
   2,223.06/3,332.51 = 1,111.79/x
3. Step 3: Cross multiply
   2,223.06x = 3,332.51 × 1,111.79
4. Step 4: Simplify right side
   2,223.06x = 3,705,058.23
5. Step 5: Solve for x
   x = 3,705,058.23/2,223.06
6. Step 6: Final answer
   x = 1,666.65