Finding the Fourth Proportional to 1,343.76, 1,852.90 and 845.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.76 : 1,852.90 = 845.80 : x
2. Step 2: Convert to fraction form
   1,343.76/1,852.90 = 845.80/x
3. Step 3: Cross multiply
   1,343.76x = 1,852.90 × 845.80
4. Step 4: Simplify right side
   1,343.76x = 1,567,182.82
5. Step 5: Solve for x
   x = 1,567,182.82/1,343.76
6. Step 6: Final answer
   x = 1,166.27