Finding the Fourth Proportional to 1,857.50, 2,563.28 and 1,111.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.50 : 2,563.28 = 1,111.28 : x
2. Step 2: Convert to fraction form
   1,857.50/2,563.28 = 1,111.28/x
3. Step 3: Cross multiply
   1,857.50x = 2,563.28 × 1,111.28
4. Step 4: Simplify right side
   1,857.50x = 2,848,521.80
5. Step 5: Solve for x
   x = 2,848,521.80/1,857.50
6. Step 6: Final answer
   x = 1,533.52