Finding the Fourth Proportional to 1,300.87, 1,795.17 and 711.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.87 : 1,795.17 = 711.39 : x
2. Step 2: Convert to fraction form
   1,300.87/1,795.17 = 711.39/x
3. Step 3: Cross multiply
   1,300.87x = 1,795.17 × 711.39
4. Step 4: Simplify right side
   1,300.87x = 1,277,065.99
5. Step 5: Solve for x
   x = 1,277,065.99/1,300.87
6. Step 6: Final answer
   x = 981.70