Finding the Fourth Proportional to 2,918.52, 4,028.00 and 1,857.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,918.52 : 4,028.00 = 1,857.15 : x
2. Step 2: Convert to fraction form
   2,918.52/4,028.00 = 1,857.15/x
3. Step 3: Cross multiply
   2,918.52x = 4,028.00 × 1,857.15
4. Step 4: Simplify right side
   2,918.52x = 7,480,590.91
5. Step 5: Solve for x
   x = 7,480,590.91/2,918.52
6. Step 6: Final answer
   x = 2,563.15