Finding the Fourth Proportional to 2,655.30, 3,669 and 1,911.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,655.30 : 3,669 = 1,911.72 : x
2. Step 2: Convert to fraction form
   2,655.30/3,669 = 1,911.72/x
3. Step 3: Cross multiply
   2,655.30x = 3,669 × 1,911.72
4. Step 4: Simplify right side
   2,655.30x = 7,014,100.68
5. Step 5: Solve for x
   x = 7,014,100.68/2,655.30
6. Step 6: Final answer
   x = 2,641.55