Finding the Fourth Proportional to 1,645.34, 2,271.03 and 946.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645.34 : 2,271.03 = 946.94 : x
2. Step 2: Convert to fraction form
   1,645.34/2,271.03 = 946.94/x
3. Step 3: Cross multiply
   1,645.34x = 2,271.03 × 946.94
4. Step 4: Simplify right side
   1,645.34x = 2,150,529.15
5. Step 5: Solve for x
   x = 2,150,529.15/1,645.34
6. Step 6: Final answer
   x = 1,307.04