Finding the Fourth Proportional to 2,291.83, 3,162.78 and 1,395.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.83 : 3,162.78 = 1,395.61 : x
2. Step 2: Convert to fraction form
   2,291.83/3,162.78 = 1,395.61/x
3. Step 3: Cross multiply
   2,291.83x = 3,162.78 × 1,395.61
4. Step 4: Simplify right side
   2,291.83x = 4,414,017.28
5. Step 5: Solve for x
   x = 4,414,017.28/2,291.83
6. Step 6: Final answer
   x = 1,925.98