Finding the Fourth Proportional to 1,610.46, 2,222.16 and 947.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.46 : 2,222.16 = 947.34 : x
2. Step 2: Convert to fraction form
   1,610.46/2,222.16 = 947.34/x
3. Step 3: Cross multiply
   1,610.46x = 2,222.16 × 947.34
4. Step 4: Simplify right side
   1,610.46x = 2,105,141.05
5. Step 5: Solve for x
   x = 2,105,141.05/1,610.46
6. Step 6: Final answer
   x = 1,307.17