Finding the Fourth Proportional to 1,610.49, 2,222.17 and 947.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.49 : 2,222.17 = 947.10 : x
2. Step 2: Convert to fraction form
   1,610.49/2,222.17 = 947.10/x
3. Step 3: Cross multiply
   1,610.49x = 2,222.17 × 947.10
4. Step 4: Simplify right side
   1,610.49x = 2,104,617.21
5. Step 5: Solve for x
   x = 2,104,617.21/1,610.49
6. Step 6: Final answer
   x = 1,306.82