Finding the Fourth Proportional to 2,309, 3,462.72 and 847.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309 : 3,462.72 = 847.76 : x
2. Step 2: Convert to fraction form
   2,309/3,462.72 = 847.76/x
3. Step 3: Cross multiply
   2,309x = 3,462.72 × 847.76
4. Step 4: Simplify right side
   2,309x = 2,935,555.51
5. Step 5: Solve for x
   x = 2,935,555.51/2,309
6. Step 6: Final answer
   x = 1,271.35