Finding the Fourth Proportional to 2,881.32, 4,323.12 and 1,320.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,881.32 : 4,323.12 = 1,320.20 : x
2. Step 2: Convert to fraction form
   2,881.32/4,323.12 = 1,320.20/x
3. Step 3: Cross multiply
   2,881.32x = 4,323.12 × 1,320.20
4. Step 4: Simplify right side
   2,881.32x = 5,707,380.10
5. Step 5: Solve for x
   x = 5,707,380.10/2,881.32
6. Step 6: Final answer
   x = 1,980.82