Finding the Fourth Proportional to 2,131.03, 2,941.36 and 1,909.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.03 : 2,941.36 = 1,909.59 : x
2. Step 2: Convert to fraction form
   2,131.03/2,941.36 = 1,909.59/x
3. Step 3: Cross multiply
   2,131.03x = 2,941.36 × 1,909.59
4. Step 4: Simplify right side
   2,131.03x = 5,616,791.64
5. Step 5: Solve for x
   x = 5,616,791.64/2,131.03
6. Step 6: Final answer
   x = 2,635.72