Finding the Fourth Proportional to 2,595.12, 3,892.56 and 647.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,595.12 : 3,892.56 = 647.34 : x
2. Step 2: Convert to fraction form
   2,595.12/3,892.56 = 647.34/x
3. Step 3: Cross multiply
   2,595.12x = 3,892.56 × 647.34
4. Step 4: Simplify right side
   2,595.12x = 2,519,809.79
5. Step 5: Solve for x
   x = 2,519,809.79/2,595.12
6. Step 6: Final answer
   x = 970.98