Finding the Fourth Proportional to 1,411.98, 1,948.92 and 852.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.98 : 1,948.92 = 852.80 : x
2. Step 2: Convert to fraction form
   1,411.98/1,948.92 = 852.80/x
3. Step 3: Cross multiply
   1,411.98x = 1,948.92 × 852.80
4. Step 4: Simplify right side
   1,411.98x = 1,662,038.98
5. Step 5: Solve for x
   x = 1,662,038.98/1,411.98
6. Step 6: Final answer
   x = 1,177.10