Finding the Fourth Proportional to 1,919.69, 2,877.24 and 748.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.69 : 2,877.24 = 748.29 : x
2. Step 2: Convert to fraction form
   1,919.69/2,877.24 = 748.29/x
3. Step 3: Cross multiply
   1,919.69x = 2,877.24 × 748.29
4. Step 4: Simplify right side
   1,919.69x = 2,153,009.92
5. Step 5: Solve for x
   x = 2,153,009.92/1,919.69
6. Step 6: Final answer
   x = 1,121.54