Finding the Fourth Proportional to 1,511.86, 2,086.31 and 848.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.86 : 2,086.31 = 848.75 : x
2. Step 2: Convert to fraction form
   1,511.86/2,086.31 = 848.75/x
3. Step 3: Cross multiply
   1,511.86x = 2,086.31 × 848.75
4. Step 4: Simplify right side
   1,511.86x = 1,770,755.61
5. Step 5: Solve for x
   x = 1,770,755.61/1,511.86
6. Step 6: Final answer
   x = 1,171.24