Finding the Fourth Proportional to 2,290.77, 3,161.84 and 1,406.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.77 : 3,161.84 = 1,406.79 : x
2. Step 2: Convert to fraction form
   2,290.77/3,161.84 = 1,406.79/x
3. Step 3: Cross multiply
   2,290.77x = 3,161.84 × 1,406.79
4. Step 4: Simplify right side
   2,290.77x = 4,448,037.86
5. Step 5: Solve for x
   x = 4,448,037.86/2,290.77
6. Step 6: Final answer
   x = 1,941.72