Finding the Fourth Proportional to 1,342.89, 1,853.60 and 845.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.89 : 1,853.60 = 845.51 : x
2. Step 2: Convert to fraction form
   1,342.89/1,853.60 = 845.51/x
3. Step 3: Cross multiply
   1,342.89x = 1,853.60 × 845.51
4. Step 4: Simplify right side
   1,342.89x = 1,567,223.84
5. Step 5: Solve for x
   x = 1,567,223.84/1,342.89
6. Step 6: Final answer
   x = 1,167.05