Finding the Fourth Proportional to 2,279.16, 3,146.72 and 1,395.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.16 : 3,146.72 = 1,395.45 : x
2. Step 2: Convert to fraction form
   2,279.16/3,146.72 = 1,395.45/x
3. Step 3: Cross multiply
   2,279.16x = 3,146.72 × 1,395.45
4. Step 4: Simplify right side
   2,279.16x = 4,391,083.45
5. Step 5: Solve for x
   x = 4,391,083.45/2,279.16
6. Step 6: Final answer
   x = 1,926.62