Finding the Fourth Proportional to 2,801.89, 4,182.47 and 2,570.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.89 : 4,182.47 = 2,570.77 : x
2. Step 2: Convert to fraction form
   2,801.89/4,182.47 = 2,570.77/x
3. Step 3: Cross multiply
   2,801.89x = 4,182.47 × 2,570.77
4. Step 4: Simplify right side
   2,801.89x = 10,752,168.40
5. Step 5: Solve for x
   x = 10,752,168.40/2,801.89
6. Step 6: Final answer
   x = 3,837.47