Finding the Fourth Proportional to 2,077.77, 2,863.95 and 1,807.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.77 : 2,863.95 = 1,807.89 : x
2. Step 2: Convert to fraction form
   2,077.77/2,863.95 = 1,807.89/x
3. Step 3: Cross multiply
   2,077.77x = 2,863.95 × 1,807.89
4. Step 4: Simplify right side
   2,077.77x = 5,177,721.83
5. Step 5: Solve for x
   x = 5,177,721.83/2,077.77
6. Step 6: Final answer
   x = 2,491.97