Finding the Fourth Proportional to 1,880.58, 2,822.22 and 1,392.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,880.58 : 2,822.22 = 1,392.15 : x
2. Step 2: Convert to fraction form
   1,880.58/2,822.22 = 1,392.15/x
3. Step 3: Cross multiply
   1,880.58x = 2,822.22 × 1,392.15
4. Step 4: Simplify right side
   1,880.58x = 3,928,953.57
5. Step 5: Solve for x
   x = 3,928,953.57/1,880.58
6. Step 6: Final answer
   x = 2,089.22