Finding the Fourth Proportional to 1,919.50, 2,648.91 and 1,133.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.50 : 2,648.91 = 1,133.56 : x
2. Step 2: Convert to fraction form
   1,919.50/2,648.91 = 1,133.56/x
3. Step 3: Cross multiply
   1,919.50x = 2,648.91 × 1,133.56
4. Step 4: Simplify right side
   1,919.50x = 3,002,698.42
5. Step 5: Solve for x
   x = 3,002,698.42/1,919.50
6. Step 6: Final answer
   x = 1,564.31