Finding the Fourth Proportional to 2,947.34, 4,420.86 and 867.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.34 : 4,420.86 = 867.39 : x
2. Step 2: Convert to fraction form
   2,947.34/4,420.86 = 867.39/x
3. Step 3: Cross multiply
   2,947.34x = 4,420.86 × 867.39
4. Step 4: Simplify right side
   2,947.34x = 3,834,609.76
5. Step 5: Solve for x
   x = 3,834,609.76/2,947.34
6. Step 6: Final answer
   x = 1,301.04