Finding the Fourth Proportional to 1,610.43, 2,222.42 and 947.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.43 : 2,222.42 = 947.15 : x
2. Step 2: Convert to fraction form
   1,610.43/2,222.42 = 947.15/x
3. Step 3: Cross multiply
   1,610.43x = 2,222.42 × 947.15
4. Step 4: Simplify right side
   1,610.43x = 2,104,965.10
5. Step 5: Solve for x
   x = 2,104,965.10/1,610.43
6. Step 6: Final answer
   x = 1,307.08