Finding the Fourth Proportional to 2,973.39, 4,099.55 and 1,909.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,973.39 : 4,099.55 = 1,909.28 : x
2. Step 2: Convert to fraction form
   2,973.39/4,099.55 = 1,909.28/x
3. Step 3: Cross multiply
   2,973.39x = 4,099.55 × 1,909.28
4. Step 4: Simplify right side
   2,973.39x = 7,827,168.33
5. Step 5: Solve for x
   x = 7,827,168.33/2,973.39
6. Step 6: Final answer
   x = 2,632.41