Finding the Fourth Proportional to 1,919.16, 2,648.30 and 1,133.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.16 : 2,648.30 = 1,133.06 : x
2. Step 2: Convert to fraction form
   1,919.16/2,648.30 = 1,133.06/x
3. Step 3: Cross multiply
   1,919.16x = 2,648.30 × 1,133.06
4. Step 4: Simplify right side
   1,919.16x = 3,000,663.89
5. Step 5: Solve for x
   x = 3,000,663.89/1,919.16
6. Step 6: Final answer
   x = 1,563.53