Finding the Fourth Proportional to 1,564.41, 2,339.72 and 1,392.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,564.41 : 2,339.72 = 1,392.29 : x
2. Step 2: Convert to fraction form
   1,564.41/2,339.72 = 1,392.29/x
3. Step 3: Cross multiply
   1,564.41x = 2,339.72 × 1,392.29
4. Step 4: Simplify right side
   1,564.41x = 3,257,568.76
5. Step 5: Solve for x
   x = 3,257,568.76/1,564.41
6. Step 6: Final answer
   x = 2,082.30