Finding the Fourth Proportional to 1,282.69, 1,769.59 and 947.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,282.69 : 1,769.59 = 947.39 : x
2. Step 2: Convert to fraction form
   1,282.69/1,769.59 = 947.39/x
3. Step 3: Cross multiply
   1,282.69x = 1,769.59 × 947.39
4. Step 4: Simplify right side
   1,282.69x = 1,676,493.93
5. Step 5: Solve for x
   x = 1,676,493.93/1,282.69
6. Step 6: Final answer
   x = 1,307.02