Finding the Fourth Proportional to 1,179.50, 1,627.72 and 713.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,179.50 : 1,627.72 = 713.76 : x
2. Step 2: Convert to fraction form
   1,179.50/1,627.72 = 713.76/x
3. Step 3: Cross multiply
   1,179.50x = 1,627.72 × 713.76
4. Step 4: Simplify right side
   1,179.50x = 1,161,801.43
5. Step 5: Solve for x
   x = 1,161,801.43/1,179.50
6. Step 6: Final answer
   x = 984.99