Finding the Fourth Proportional to 2,880.58, 4,323.18 and 1,321.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,880.58 : 4,323.18 = 1,321.32 : x
2. Step 2: Convert to fraction form
   2,880.58/4,323.18 = 1,321.32/x
3. Step 3: Cross multiply
   2,880.58x = 4,323.18 × 1,321.32
4. Step 4: Simplify right side
   2,880.58x = 5,712,305.02
5. Step 5: Solve for x
   x = 5,712,305.02/2,880.58
6. Step 6: Final answer
   x = 1,983.04