Finding the Fourth Proportional to 2,180.06, 3,270.64 and 947.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.06 : 3,270.64 = 947.17 : x
2. Step 2: Convert to fraction form
   2,180.06/3,270.64 = 947.17/x
3. Step 3: Cross multiply
   2,180.06x = 3,270.64 × 947.17
4. Step 4: Simplify right side
   2,180.06x = 3,097,852.09
5. Step 5: Solve for x
   x = 3,097,852.09/2,180.06
6. Step 6: Final answer
   x = 1,420.99