Finding the Fourth Proportional to 1,552.20, 2,142.24 and 1,079.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.20 : 2,142.24 = 1,079.83 : x
2. Step 2: Convert to fraction form
   1,552.20/2,142.24 = 1,079.83/x
3. Step 3: Cross multiply
   1,552.20x = 2,142.24 × 1,079.83
4. Step 4: Simplify right side
   1,552.20x = 2,313,255.02
5. Step 5: Solve for x
   x = 2,313,255.02/1,552.20
6. Step 6: Final answer
   x = 1,490.31