Finding the Fourth Proportional to 2,801.33, 3,866.52 and 1,857.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.33 : 3,866.52 = 1,857.17 : x
2. Step 2: Convert to fraction form
   2,801.33/3,866.52 = 1,857.17/x
3. Step 3: Cross multiply
   2,801.33x = 3,866.52 × 1,857.17
4. Step 4: Simplify right side
   2,801.33x = 7,180,784.95
5. Step 5: Solve for x
   x = 7,180,784.95/2,801.33
6. Step 6: Final answer
   x = 2,563.35