Finding the Fourth Proportional to 2,802.75, 3,868.17 and 1,810.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,802.75 : 3,868.17 = 1,810.91 : x
2. Step 2: Convert to fraction form
   2,802.75/3,868.17 = 1,810.91/x
3. Step 3: Cross multiply
   2,802.75x = 3,868.17 × 1,810.91
4. Step 4: Simplify right side
   2,802.75x = 7,004,910.61
5. Step 5: Solve for x
   x = 7,004,910.61/2,802.75
6. Step 6: Final answer
   x = 2,499.30