Finding the Fourth Proportional to 2,179.49, 3,270.15 and 947.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.49 : 3,270.15 = 947.94 : x
2. Step 2: Convert to fraction form
   2,179.49/3,270.15 = 947.94/x
3. Step 3: Cross multiply
   2,179.49x = 3,270.15 × 947.94
4. Step 4: Simplify right side
   2,179.49x = 3,099,905.99
5. Step 5: Solve for x
   x = 3,099,905.99/2,179.49
6. Step 6: Final answer
   x = 1,422.31