Finding the Fourth Proportional to 3,817.80, 5,725.98 and 1,868.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,817.80 : 5,725.98 = 1,868.76 : x
2. Step 2: Convert to fraction form
   3,817.80/5,725.98 = 1,868.76/x
3. Step 3: Cross multiply
   3,817.80x = 5,725.98 × 1,868.76
4. Step 4: Simplify right side
   3,817.80x = 10,700,482.38
5. Step 5: Solve for x
   x = 10,700,482.38/3,817.80
6. Step 6: Final answer
   x = 2,802.79