Finding the Fourth Proportional to 1,300.76, 1,795.05 and 711.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.76 : 1,795.05 = 711.30 : x
2. Step 2: Convert to fraction form
   1,300.76/1,795.05 = 711.30/x
3. Step 3: Cross multiply
   1,300.76x = 1,795.05 × 711.30
4. Step 4: Simplify right side
   1,300.76x = 1,276,819.07
5. Step 5: Solve for x
   x = 1,276,819.07/1,300.76
6. Step 6: Final answer
   x = 981.59