Finding the Fourth Proportional to 2,905.98, 4,009.59 and 1,911.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,905.98 : 4,009.59 = 1,911.42 : x
2. Step 2: Convert to fraction form
   2,905.98/4,009.59 = 1,911.42/x
3. Step 3: Cross multiply
   2,905.98x = 4,009.59 × 1,911.42
4. Step 4: Simplify right side
   2,905.98x = 7,664,010.52
5. Step 5: Solve for x
   x = 7,664,010.52/2,905.98
6. Step 6: Final answer
   x = 2,637.32