Finding the Fourth Proportional to 3,663.19, 5,055.33 and 2,091.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.19 : 5,055.33 = 2,091.25 : x
2. Step 2: Convert to fraction form
   3,663.19/5,055.33 = 2,091.25/x
3. Step 3: Cross multiply
   3,663.19x = 5,055.33 × 2,091.25
4. Step 4: Simplify right side
   3,663.19x = 10,571,958.86
5. Step 5: Solve for x
   x = 10,571,958.86/3,663.19
6. Step 6: Final answer
   x = 2,886.00