Finding the Fourth Proportional to 2,866.39, 4,300.11 and 1,111.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.39 : 4,300.11 = 1,111.33 : x
2. Step 2: Convert to fraction form
   2,866.39/4,300.11 = 1,111.33/x
3. Step 3: Cross multiply
   2,866.39x = 4,300.11 × 1,111.33
4. Step 4: Simplify right side
   2,866.39x = 4,778,841.25
5. Step 5: Solve for x
   x = 4,778,841.25/2,866.39
6. Step 6: Final answer
   x = 1,667.20