Finding the Fourth Proportional to 1,936.49, 2,919.32 and 1,811.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,936.49 : 2,919.32 = 1,811.21 : x
2. Step 2: Convert to fraction form
   1,936.49/2,919.32 = 1,811.21/x
3. Step 3: Cross multiply
   1,936.49x = 2,919.32 × 1,811.21
4. Step 4: Simplify right side
   1,936.49x = 5,287,484.72
5. Step 5: Solve for x
   x = 5,287,484.72/1,936.49
6. Step 6: Final answer
   x = 2,730.45