Finding the Fourth Proportional to 1,646.29, 2,271.53 and 947.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.29 : 2,271.53 = 947.73 : x
2. Step 2: Convert to fraction form
   1,646.29/2,271.53 = 947.73/x
3. Step 3: Cross multiply
   1,646.29x = 2,271.53 × 947.73
4. Step 4: Simplify right side
   1,646.29x = 2,152,792.39
5. Step 5: Solve for x
   x = 2,152,792.39/1,646.29
6. Step 6: Final answer
   x = 1,307.66