Finding the Fourth Proportional to 1,920.79, 2,649.27 and 1,323.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.79 : 2,649.27 = 1,323.48 : x
2. Step 2: Convert to fraction form
   1,920.79/2,649.27 = 1,323.48/x
3. Step 3: Cross multiply
   1,920.79x = 2,649.27 × 1,323.48
4. Step 4: Simplify right side
   1,920.79x = 3,506,259.17
5. Step 5: Solve for x
   x = 3,506,259.17/1,920.79
6. Step 6: Final answer
   x = 1,825.43