Finding the Fourth Proportional to 1,345.39, 1,856.78 and 848.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.39 : 1,856.78 = 848.41 : x
2. Step 2: Convert to fraction form
   1,345.39/1,856.78 = 848.41/x
3. Step 3: Cross multiply
   1,345.39x = 1,856.78 × 848.41
4. Step 4: Simplify right side
   1,345.39x = 1,575,310.72
5. Step 5: Solve for x
   x = 1,575,310.72/1,345.39
6. Step 6: Final answer
   x = 1,170.90