Finding the Fourth Proportional to 1,442.50, 1,989.73 and 852.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.50 : 1,989.73 = 852.61 : x
2. Step 2: Convert to fraction form
   1,442.50/1,989.73 = 852.61/x
3. Step 3: Cross multiply
   1,442.50x = 1,989.73 × 852.61
4. Step 4: Simplify right side
   1,442.50x = 1,696,463.70
5. Step 5: Solve for x
   x = 1,696,463.70/1,442.50
6. Step 6: Final answer
   x = 1,176.06