Finding the Fourth Proportional to 2,606.94, 3,594.80 and 2,131.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.94 : 3,594.80 = 2,131.28 : x
2. Step 2: Convert to fraction form
   2,606.94/3,594.80 = 2,131.28/x
3. Step 3: Cross multiply
   2,606.94x = 3,594.80 × 2,131.28
4. Step 4: Simplify right side
   2,606.94x = 7,661,525.34
5. Step 5: Solve for x
   x = 7,661,525.34/2,606.94
6. Step 6: Final answer
   x = 2,938.90