Finding the Fourth Proportional to 2,939.87, 4,410.56 and 1,091.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,939.87 : 4,410.56 = 1,091.51 : x
2. Step 2: Convert to fraction form
   2,939.87/4,410.56 = 1,091.51/x
3. Step 3: Cross multiply
   2,939.87x = 4,410.56 × 1,091.51
4. Step 4: Simplify right side
   2,939.87x = 4,814,142.84
5. Step 5: Solve for x
   x = 4,814,142.84/2,939.87
6. Step 6: Final answer
   x = 1,637.54