Finding the Fourth Proportional to 1,853.37, 2,557.83 and 1,107.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,853.37 : 2,557.83 = 1,107.22 : x
2. Step 2: Convert to fraction form
   1,853.37/2,557.83 = 1,107.22/x
3. Step 3: Cross multiply
   1,853.37x = 2,557.83 × 1,107.22
4. Step 4: Simplify right side
   1,853.37x = 2,832,080.53
5. Step 5: Solve for x
   x = 2,832,080.53/1,853.37
6. Step 6: Final answer
   x = 1,528.07