Finding the Fourth Proportional to 2,180.42, 3,271.23 and 947.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.42 : 3,271.23 = 947.94 : x
2. Step 2: Convert to fraction form
   2,180.42/3,271.23 = 947.94/x
3. Step 3: Cross multiply
   2,180.42x = 3,271.23 × 947.94
4. Step 4: Simplify right side
   2,180.42x = 3,100,929.77
5. Step 5: Solve for x
   x = 3,100,929.77/2,180.42
6. Step 6: Final answer
   x = 1,422.17