Finding the Fourth Proportional to 1,885.90, 2,828.82 and 1,111.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.90 : 2,828.82 = 1,111.29 : x
2. Step 2: Convert to fraction form
   1,885.90/2,828.82 = 1,111.29/x
3. Step 3: Cross multiply
   1,885.90x = 2,828.82 × 1,111.29
4. Step 4: Simplify right side
   1,885.90x = 3,143,619.68
5. Step 5: Solve for x
   x = 3,143,619.68/1,885.90
6. Step 6: Final answer
   x = 1,666.91