Finding the Fourth Proportional to 2,572.23, 3,858.62 and 1,111.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.23 : 3,858.62 = 1,111.06 : x
2. Step 2: Convert to fraction form
   2,572.23/3,858.62 = 1,111.06/x
3. Step 3: Cross multiply
   2,572.23x = 3,858.62 × 1,111.06
4. Step 4: Simplify right side
   2,572.23x = 4,287,158.34
5. Step 5: Solve for x
   x = 4,287,158.34/2,572.23
6. Step 6: Final answer
   x = 1,666.71