Finding the Fourth Proportional to 2,655.47, 3,664.94 and 1,911.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,655.47 : 3,664.94 = 1,911.89 : x
2. Step 2: Convert to fraction form
   2,655.47/3,664.94 = 1,911.89/x
3. Step 3: Cross multiply
   2,655.47x = 3,664.94 × 1,911.89
4. Step 4: Simplify right side
   2,655.47x = 7,006,934.25
5. Step 5: Solve for x
   x = 7,006,934.25/2,655.47
6. Step 6: Final answer
   x = 2,638.68