Finding the Fourth Proportional to 2,279.36, 3,146.22 and 1,429.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.36 : 3,146.22 = 1,429.07 : x
2. Step 2: Convert to fraction form
   2,279.36/3,146.22 = 1,429.07/x
3. Step 3: Cross multiply
   2,279.36x = 3,146.22 × 1,429.07
4. Step 4: Simplify right side
   2,279.36x = 4,496,152.88
5. Step 5: Solve for x
   x = 4,496,152.88/2,279.36
6. Step 6: Final answer
   x = 1,972.55