Finding the Fourth Proportional to 2,279.51, 3,145.49 and 1,284.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.51 : 3,145.49 = 1,284.94 : x
2. Step 2: Convert to fraction form
   2,279.51/3,145.49 = 1,284.94/x
3. Step 3: Cross multiply
   2,279.51x = 3,145.49 × 1,284.94
4. Step 4: Simplify right side
   2,279.51x = 4,041,759.50
5. Step 5: Solve for x
   x = 4,041,759.50/2,279.51
6. Step 6: Final answer
   x = 1,773.08