Finding the Fourth Proportional to 1,185.52, 1,635.78 and 719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.52 : 1,635.78 = 719.50 : x
2. Step 2: Convert to fraction form
   1,185.52/1,635.78 = 719.50/x
3. Step 3: Cross multiply
   1,185.52x = 1,635.78 × 719.50
4. Step 4: Simplify right side
   1,185.52x = 1,176,943.71
5. Step 5: Solve for x
   x = 1,176,943.71/1,185.52
6. Step 6: Final answer
   x = 992.77