Finding the Fourth Proportional to 3,663.75, 5,055.98 and 2,091.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.75 : 5,055.98 = 2,091.81 : x
2. Step 2: Convert to fraction form
   3,663.75/5,055.98 = 2,091.81/x
3. Step 3: Cross multiply
   3,663.75x = 5,055.98 × 2,091.81
4. Step 4: Simplify right side
   3,663.75x = 10,576,149.52
5. Step 5: Solve for x
   x = 10,576,149.52/3,663.75
6. Step 6: Final answer
   x = 2,886.70