Finding the Fourth Proportional to 1,300.62, 1,951.56 and 813.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.62 : 1,951.56 = 813.54 : x
2. Step 2: Convert to fraction form
   1,300.62/1,951.56 = 813.54/x
3. Step 3: Cross multiply
   1,300.62x = 1,951.56 × 813.54
4. Step 4: Simplify right side
   1,300.62x = 1,587,672.12
5. Step 5: Solve for x
   x = 1,587,672.12/1,300.62
6. Step 6: Final answer
   x = 1,220.70