Finding the Fourth Proportional to 1,859.31, 2,564.51 and 1,579.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,859.31 : 2,564.51 = 1,579.10 : x
2. Step 2: Convert to fraction form
   1,859.31/2,564.51 = 1,579.10/x
3. Step 3: Cross multiply
   1,859.31x = 2,564.51 × 1,579.10
4. Step 4: Simplify right side
   1,859.31x = 4,049,616.26
5. Step 5: Solve for x
   x = 4,049,616.26/1,859.31
6. Step 6: Final answer
   x = 2,178.02