Finding the Fourth Proportional to 3,395.31, 5,092.72 and 1,055.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,395.31 : 5,092.72 = 1,055.25 : x
2. Step 2: Convert to fraction form
   3,395.31/5,092.72 = 1,055.25/x
3. Step 3: Cross multiply
   3,395.31x = 5,092.72 × 1,055.25
4. Step 4: Simplify right side
   3,395.31x = 5,374,092.78
5. Step 5: Solve for x
   x = 5,374,092.78/3,395.31
6. Step 6: Final answer
   x = 1,582.80